Yamaha warrior backfire through carb. Members; 4 #1 Posted October 1, 2020.

Yamaha warrior backfire through carb If it's lean, it will be worst when cold and pop back through the carb at idle more so then I've been getting a backfire through the carb every now and then while starting the motor. Gwbarm. Which kind of sounds like what you are talking about. I took a short video of it and have Yamaha YFM350 Raptor/Warrior ('87-Present) From experience with my Yamaha SRX600 streetbike, I know the Yamaha's like to run them lean, and with a hole in your exhaust, this will increase the popping/backfiring. g. My next plan is to run a compression test and see what numbers I get back. I also added injector-carb cleaner with the gas. When entering the Diag mode. $17. I have recently changed the plug and it was black, also it smells like it is running rich. I decided to take it to a local dealer and it took them maybe 2 mins to fix it. gotta 98 warrior somtimes when stalled,very hard to start,somtimes will backfire but seems to run good once started it has an aftermarket cdi box on and a new coil,carb was gone through,it has 1998 yamaha warrior quad new moose racing stator new cdi box rebuilt motor was out riding was in a little mud lost spark have never been able Lastly, when a valve seal is worn, it can cause a backfire when accelerating with the carburetor. Than wouldnt start. pilot jet should be I think I have narrowed the problem down to the fuel air mixture on the new carb is not right. I put new plugs in and still no start Battery is telling me 12. set your valve clearance and check your compression if it is low you could have a burned intake valve that is allowing back pressure, that is about the only way to - backfires/pops at idle through the front cylinder exhaust and occasionally front cylinder carbs. Checked the intake boot no cracks everything is Forums. Now turn the engine over until you see number one intake valve just beginning to close. Spent a while going through the manual and browsing more and more on the internet. When I say "sounds like a shotgun", I'm not kidding. Bluesman I Stripped the bike down to the engine earlier and took a good look around found that the carb is blown out of the boot. Now the atv will starts but will only stay running with the choke on. This causes a lean mixture in the carburetor, which can lead to pre-ignition and engine knock. Want Answer 0. com is generated by its users. Or fastest delivery Tomorrow, Jan 14 . 5 turns out from seat. A sticking or bouncing intake valve is also possible, but much rarer. spray no tools im not that crazy,then will continue on to the valve adjusting. raptor 350 backfire carb yamaha warrior 350 motor yamaha raptor backfiring adjust parking brake endeavor 1987 yamaha moto4 motorcycle yamaha 350 yamaha 600 1987 yamaha warrior 350 parts 825 views . clean if needed. Jump to Latest 2000 Yamaha Bear Tracker 1998 Fourtrax 300 1988 Yamaha 100 R. 026. plz help I get a backfire or "hiccup" through the intake track and carb. Finally after about the 10th time it cut on of the boots. Thread starter bw4202006; Start date Jan 8, 2008; Help Support Yamaha Raptor 350 & Warrior Forum: B Timing Issues Ignition Timing. 2001 Yamaha SRX700 2000 Yamaha Phazer 1978 Yamaha Enticer ET250B 1975 Yamaha GPX433G Backfire threw the carb is a sign of poor seals. Jump to Latest Warrior_Scott. Even then it will backfire thru the carb after 5-10 seconds and stops. The carb is 2 yr TRUE69 changed the title to 99 Yamaha Bear Tracker 250 carb problem; 2 yr Ajmboy changed the title to 1999 Yamaha Bear Tracker 250 carb problem; Gwbarm. The carb has standard primary rods and DB secondary rods on an L hanger. Check to be sure that the cam is properly timed. 99. I recommend checking the carburetor for any dirt or debris that may be affecting its functioning and cleaning it if needed. Did some searching on the board to find out what I could do. I have a 2000 600 Grizzly that does the EXACT same thing. It would turn over but only backfire out of the exhaust realy loud and blow out about a 6 inch long flame. Adjust number one exhaust. thanks for all the input keep it coming. A misfiring spark is far and away the most common cause. 17 posts · Joined 2014 Anything more than the slightest throttle input will kill the engine. I am having the following problem: The engine is backfiring through the carb. Even though you put in new valves, my guess is worn valve guides. The fuel filter is new so I believe it was otherwise getting enough fuel. it is because its to lean. i rebuilt my first carb on a car at 12 years old and that was a chevy quadra-jet. I now can't tune it to run properly at Running Rich backfire through carbs. I purchased a used a used head and valve assembly which was claimed to be from a running Big Bear. Please help. Menu. Joined Apr 24, 2022 2001 Wolverine 350 carb. Would backfire through the carb and wouldn't ever idle but seemed to run fine with throttle. Recommended Posts. This thing is my first quad so new to working on them when I got it it has 150 psi compression but when cranked on gas or carb cleaner it only backfires through the carb so I did some work on it. backfiring through carb. (pushes the carb right out of the boot) I'm looking for some ideas on what would cause that Ok so I put the cyl at ATDC and took the covers off and was able to "roll" the pushrod with no problems. As soon as I get into the throttle, it "breaks apart" and backfires through the carb. 17 posts · Joined 2014 The front cylinder hydraulic lifter noise disappeared and the noise from the Gear Box quieted down considerably. I noticed that the intake manifold is ripped from the constant backfiring. That should take care of any residue in the carbs. A forum community dedicated to Yamaha Raptor owners and enthusiasts. i would probably clean out the fuel Hello everyone. Doug 1968 modified fastback, Replaced the carb, CDI (this is what caused it to stop running)(replaced with a used, 2001 factory CDI), starter clutch, water pump, and keyway (slightly, not all the way flat). need to remove and clean the carburetor by hand with carburetor cleaner. You already did the carb so try that bogus switch on the left handlebar. thanks Enjoy XS650. I sure do feel like a damn Honda 350 atv will not rev backfires through carb easy started idles perfect but not rev up. make sure fuel flows adequately by removing the line going to carb and turn key to see if fuel is pumping out. Thread starter 97warriorrider; Start date Feb 23, 2008; Help Support Yamaha Raptor 350 & Warrior Forum: Air Filter & Guide & END CAP Kit For Yamaha Warrior Raptor Wolverine 350 YFM 350 Grizzly 600 660 YFM600 660 1987-2013 1UY-14458-01 1UY-14468-00 1UY-14451-00 moto1988ky. One of the primary causes of an engine backfiring through the carburetor is improper ignition timing. Troubleshooting - backfire through carburetor. If it's backfiring at idle or 0-1/4 throttle then that is the pilot jet and fuel mixture screw. Members; 4 #1 Posted October 1, 2020. We we cleaned the carb including the jets, adjusted the air screw from 2 and a half out to 3 turns out and nothing changed. mine was lean because of a crack in the intake tube behind the carb. Jump to Latest 21 - 24 of 24 Posts. When I installed the carb I set the air mixture screw at 1. Sireck Cold Weather Balaclava Ski Mask, Yamaha Rhino Performance Discussions Rhino 660 backfiring thru carb. Carburetor jetting: An overly-lean low-speed circuit, non-functioning I just bought a 98 Warrior and it idles great (when it starts) but when you give it gas it falls on its face, backfires and dies if you get all the way into it. Yamaha Rhino Performance Discussions. Mine even smoked alot at start up. I just bought a 05 1100 custom it has the hard krome exhaust on it. net is an independent Yamaha enthusiast website owned and operated by VerticalScope Inc. What could I do to fix this. Save Share Whenever it lost contact or arced it would spit and sputter and backfire through the carb. when i got the quad it had a uni airfilter and a supertrapp silencer and had a 42. This thing has got me Backfires through carburetor. Help!!!!! By afraid2fly, July 13, 2010 in Utility ATV. Either the engine is not getting enough fuel Backfire through carbs. 5(stock) pilot jet and a 150 main jet in it,it ran good i just wanted more so i recently installed a je 12. My 660 jumped time and did that very thing. The front cylinder hydraulic lifter noise disappeared and the noise from the Gear Box quieted down considerably. I have readthatmaybe its an air leah in intake boot. i just finished a very mild build. I'm guessing that the bike wasn't dyno tuned Have to give it a little choke when it’s cold, but once it starts it runs perfectly without it. I have owned two motorcycle shops. I am not carberutor savy. I done everything to try to fix it . If the spark plug is advanced too far (meaning if it sparks too early), your intake Ok so I just bought a 1990 yamaha warrior 350. com receives a small share of sales from some links on this page, but direct donations have a much greater impact on keeping this site going. 0 out of 5 stars. 99. Only show this user However, giving it gas causes it to hesitate sometimes at very low revs higher revs it's perfect. Generally, a backfire is caused by an imbalance in the air to fuel ratio. Clean the carb good, before you put it back you should flip the carb over and back to hear the float move freely if you do not, something else is wrong. I got a few backfires through the carbs and the right air filter was soaked with fuel. Apr 26, 2012 #1 My bike is running rich, i am getting carbon deposits on my spark plugs. Engines only need three things to run. new jets and clean carb7 I have replaced the ENTIRE fuel system from the petcock to the carb. I picked up a 2004 Raptor 350 for $500. hondaforeman450 Discussion starter. New Piston and Rings 4th 0/S New Valve Seals New Wiring Harness New Plug Cleaned Carbureator New Intake Boot It still will not run and is backfiring out of the carbureator - but mainly does nothing. it might still be a dirty carb, sometimes carb cleaner is not enough you have blow air through all of the passages along with carb cleaner. Jump to Latest 5. My buddy has a big bear 400 that is spitting back through the carb at idle and just above idle. I hope it's that simple, but may require more investigation. You say you cleaned the carb **in** carb cleaner, as opposed to *with* carb cleaner. The accelerator cable at the plate is out of adjustment and in turn, stops the plate from closing when the microswitch makes contact with the ignition. I was told it was the carb. Bob i looked around the diaphram cap. It just cranks over and over but still nothing. So I dug my warrior out of storage replaced the carburetor with one off Amazon & it was running great. Is there ever any backfire up thru the intake? A forum community dedicated to Yamaha Road Star Warrior motorcycle owners and enthusiasts. The accelerator cable at the plate is out of adjustment and in turn, stops the plate from closing when the microswitch makes contact with the Yamaha YFM350 Raptor/Warrior ('87-Present) Yamaha YFZ450/450R (2004-Present) Yamaha YFZ350 Banshee (1987-Present) Yamaha YFM700R Raptor (2006-Present) Tires & Wheels Top Contributors this Month View All Ok so I put the cyl at ATDC and took the covers off and was able to "roll" the pushrod with no problems. This thing is my first quad so new to working on them when I got it it has 150 psi compression but when cranked on gas or carb backfiring through carb. a tiny tear can do this. Causing the intake valve to be open when the spark is arced across the plug at the Thing is,that the carb was jetted for the pipe and air filter I have and ran fine beforethe plug looked perfect and it ran great. video. Ask a Question. Its in pretty decent condition. . 1. i just rejetted the carbs up one size to run with straight pipes and UNI foam Then, I decided to try to make it run better by removing the partly clogged spark screen and sprayed in 'Blaster LMT (lawn mower tune-up) through the spark plug hole to clean the carbon off of the piston face. did Yamaha YFM350 Raptor/Warrior ('87-Present) Warrior starts and idles fine, backfires and sputters when gas is touched?? '99 Warrior,JE 366 10. The fuel forms a varnish - a gummy layer inside of your carburetor and clogs the tiny holes in the idle jet. I have had the carb off more times than I can remember and have confirmed or set the following things: Installed the 3. Got it all put together and holy crap it started. OK I have the same problem with Carb backfire on an original chevy 302. Last week it didn't want to start it would crank & I could smell gas but A carburetor backfire describes the small explosion that sometimes occurs when starting up a car. 390,CFM w/ K&N,Edelbrock,Yoshimura RS3 Full system,YZ250 shifter,PRM nerfs,Pro-taper SE,ITP Bajas, GBC XC Masters,p&p,skids,Motion Pro,Spider Yamaha Backfiring through Carb 2000 Beartracker. Come join the discussion about performance, news, modifications, troubleshooting, maintenance, and more! Show Less Grizzly won’t idle backfire thru carb. It doesn't do after I am going faster, only about 10 mph and under. Though it was because the old one cracked and wasn't pulling a vacuum for the cv but that's not the Intake manifold air leak: A lean condition due to an intake manifold air leak can cause backfiring. Jump to Latest 11K views 5 replies your quad is probably sucking extra air in through the carb boot. Thread starter 396375; Start date May 13, 2017; Tags backfire carbs ICHIPY Motorcycle Carburetor Repair Kit Carburetor Rebuild Kit for Yamaha V-MAX 1200 Vmax 1985-2000 V-MAX1200 mayihe-31%. I checked the gap on the new spark plug it was at . it has a e series exhaust on it. Follow that same sequence all the way through the firing order. The pop is quite loud and usually precedes a flame that can emerge from the exhaust after the engine backfires. 1999 Yamaha Warrior - Carb Problems. Come join the discussion about performance, classifieds V-Star 1100 Wiki Knowledge Base - 1 New Owner "MUST READ" Section the link is all about the 1100, read the first section "must read". Latest: Mustangbrian427; Jan 1, 2025; Motor, Transmission, Electrical, Intake & Exhaust. I did that and started it right up and let it run for 20 min then it died and would not start back up. I have moved the fuel mix screw all over and still got nothing. I went thru the whole carb twice, float and jet needle are right I'm sure it's not carb. I replaced the piston rings all top end gaskets the valves and adjusted the valaves and lined up the timing marks without the Help Support Yamaha Raptor 350 & Warrior Forum: This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others. when i give it gas it just bogs down and stalls Ive replaced the fuel pump, cleaned the carb, new fuel filter, new spark plug, running 91 gas which is fresh too rhinoforums. Air Filter & Guide & END CAP Kit For Yamaha Warrior Raptor Wolverine 350 YFM 350 Grizzly 600 660 YFM600 660 1987-2013 1UY-14458-01 will miss out the exhaust lean or rich but when you start engine braking and have the throttle totally off then it will backfire through the exhaust if lean. Adding some choke doesn’t significantly change the amount of throttle you can give it, if at all. To date I have cleaned out I have a98 350 warrior and started with no spark and now have it to running well at idle but as soon as i try to throttle it spit and backfires in muffler. Since replacing all of that, the machine starts and idles fine. I also compressioned tested it it was about 105 PSI while the front was 120 PSI. 4K views 26 replies 6 participants last post by YorkGTO Jul 2, 2023. Yamaha Rhino General Discussions 660 back fires through carburetor Hello my name is Wolfe my 09 Rhino 660 back fires through the carburetor when I attempt to accelerate. 2005 Rhino 660-Realtree Camo: Yamaha-Overfenders,Digi I tried adjusting the right carburetor mixture screw with the bike running, but didn't get a single pop from the exhaust. The last 2 weeks i have replaced the carb (twice actually) new boots on both ends, new air filter, cleaned out the gas tank, new petcock valve all the fun stuff. (It was gone when I got the bike). Video. grizzlycentral. Come join the discussion about performance, modifications, troubleshooting, maintenance, classifieds, and more! Find conversations around all of your favorite Yamaha off-road vehicle models. valves and the timing was off. FREE delivery Sat, Jan 18 . The carburetor was black inside around the butterfly. if you have a fuel solenoid; just remove it from the carburetor and plug it back To me a "backfire" sounds like a shotgun. Have taken it to a Yamaha shop for tune up and adjust valves, etc. Rhino Hunter . Clutch & Basket Assembly Kit Heavy Duty for Yamaha Warrior 350 1987 Backfire thru pipes. P. AIS has been eliminated. even when warmed up. :banghead:Hey all, I have a 1994 big bear 350. A. However, instead of a low end bog an backfire, it now backfires an dies between 1/4-1/2 throttle. When the spark plug fires too early or too late, it disrupts the engine’s combustion process. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Open to all Grizzly models including 700, 660, 600, 350, and 125. pulled hard in every gear through all RPM's Inc. I did about 4 hrs of studying it and found when the throttle is opened, it opens the throttle butter fly about 1/6 open before it starts raising the needle that allows fuel to flow in high speed. Save Share Reply Quote Like. What’s the Real Effect of an Engine Backfire? The severity of a backfire normally depends on its Components of the Yamaha 350 Warrior Carburetor. I bought it seized and repaired it. If it stumbles, the idle is ok, but sometimes it hiccups again and dies. Jump to Latest 2. it starts with weakening performance and bad m. At idle it pops through the carb. I would maybe check the wiring make sure you don't have a short somewhere. It appears the engine runs better but I still have the popping/backfire out the exhaust pipe. I am going to put my orange pump cam back on and back to the 31 squirter and start from scratch again. It will still start right up and run fine but will backfire on idle. Grizzly 600 Blowing Carb off/backfire. com? Consider making a donation to help support the site. I also removed the carb and checked all the intake components around the intake manifold, then reassembled, finding no leaks or warping. Content on rhinoforums. Come join the discussion about performance, classifieds, troubleshooting, maintenance Re: 1994 yamaha G9 backfire through carburetor I have a 89-90 G2 and I removed the entire air box system and replaced with an open air filter that connects directly to the carb. ride more often it didn't always do this. Yamaha valves are known to stretch and this closes the lash, requiring adjustment for best performance. It will idle but when I blip the throttle about 1/4 it backfires thru the carb and stall. put it all back together set the timing and went to start it and everytime since all it wants to do is backfire through the carb, I have set the timing every which way mutiple times Yamaha YFM350 Raptor/Warrior ('87-Present) my 350 raptor will not idle, barely starts. YFM350 Carburetor for Yamaha Warrior 350 Carburetor, for Yamaha Big Bear 350 Carburetor, Compatible with Yamaha Warrior 350 YFM350 Carburetor 1987-2004, Big Bear 350 YFM350 Carburetor 1987-1998. Air filter clear. When you decel you are getting unburned fuel igniting back through the carb. Try setting the fuel air mixture screw to 2 1/4 to 2 1/2 turns out, if that doesnt solve the problem drop the needle a notch, test and recheck. if I rev the engine while 1/2 opened it'll backfire through the exhaust pipe when it's revving down, also if I place my hand over the air intake the engine will race. 1 piston kibble white springs and retainers, megacycle 252x2 cam, mild p&p, i put in a 45 Bike runs strong and has 10. So, you either have a timing problem or a valve train problem. it doesn't do it on a regular basis, but i gotta guess that it isn't ever a good thing. I have to keep the choke pulled even when the engine is hot. Have the spark plugs been replaced? Have the plug wires been tested? Read full answer. off goes the carb. Come join the discussion about performance, modifications, troubleshooting, maintenance, classifieds 2001 Yamaha warrior need help. author. I have worked on many different brands of bikes. i checked the timing and he did a cam mod but i set it back to stock timing. net is what causes backfire? if it helps i have a yamaha warrior 4 stroke. Linkages look good, everything moves OK. 2008 Yamaha Grizzly 700 EPS, EFI Warn Winch Symantec hand/thumb warmer Bighorn 2. Print this page; Share this page; Add Your Answer Put it back on and now it will start and run without the choke but still backfires through the carb. The accelerator cable moves through the throttle plate before the 2001 Yamaha SRX700 2000 Yamaha Phazer 1978 Yamaha Enticer ET250B 1975 Yamaha GPX433G 1978 John Deere Spitfire. All recently rebuilt. p. I pulled the carb and cleaned it If the carb is leaking, it is because the float is set wrong or the float valve needle isn't seating properly. lean it will backfire threw the exhoust and rich will do it threw the carb. Fresh gas and new plug. Clicking this will make more experts see the question and we will remind you when it gets answered. Share Posted October 1, 2020. I'm using 87 octane gas without ethanol. Pulled the carb off again, re cleaned it out. I am going to jet up as it seems to have a faint surge at 55 mph and I have read that many of the holley vacuum secondary carbs whether its the 600 or the 750 or the street avenger series all have these problems when used with anything bigger then a stock Backfiring through Carb. So bad that when it would backfire through the carb it would kill the engine. check the tank vent and carb vents. I have it pretty dialed in regarding jetting. You can look through the throttle bodies and see your intake valves, You can see if they are moving or stuck. XS650. I'll let you know. Here are two solutions for you: A - Take the carberator off and soak it in some good quality carb cleaner for about 1/2 an hour. When you see the exhaust valve just beginning to open, adjust the corresponding intake valve. Backfire through the carb = too lean Backfire through the exhaust= too rich I think thats right. Yamaha YFM350 Raptor/Warrior ('87-Present) send a pop of air through the air intake hose in front of the fuel tank. if you only have an exhaust change you should up the mains one size and turn the PMS screws out until the popping in decell goes away. I did notice the spark was orange and looked a little weak. The Yamaha 350 Warrior carburetor is an essential component of the ATV’s engine system. Adjust number one intake. 95 Brand Zoom First of all I would like to thank you everyone in advance for there help. Content on grizzlycentral. It started to backfire and die. Tags 07 rhino backfire carburator. Usually ok guys im having some trouble tuning the carb on my warrior. Most of the time it's because the Pilot/Idle jet is clogged in the carburetor. Copper exhaust gaskets. It didn't run when I bought it. 5k miles on it, BUT, have always delt w this ANNOYING stumble/backfire thru the carb. Seems to be backfiring through the carb still. Tags A forum community dedicated to Yamaha Grizzly owners and enthusiasts. It is responsible for providing the necessary mixture of fuel and air to the engine for combustion. A forum community dedicated to Yamaha Grizzly owners and enthusiasts. I ended up installing a carb rebuild kit and closed the parking brake by hand since it was frozen open. Comment; Flag; More. Outboard Yamaha 50 HP carbs synchronization - YouTube Good luck Last edited by almetelo; 04-12-2014 backfire through the intake is a classic sign of a lean air fuel ratio. It would blow the oil off the filter into the airbox. Any suggestions. Geez, this is frustrating. Can also be removed and cleaned super easy and opens up the engine box for add'l air flow. My fuel filter gets clogged up and don't get enough fuel sometimes wich makes mine backfire. Sounds like it does but The only way to backfire through a carburetor is to have the incoming charge ignited. Has new plug and decent spark. Idl Hi everyone, I received a 98 Yamaha Timberwolf from my brother for free, and I'm working on getting it going. $39. I jetted the carb with dyno jets. 2 gallon fuel cell Magellan 610 Explorist GPS & RAM mount Yamaha HD Bumper Battery Meter Yamaha hand-guards 40 Channel Cobra CB radio w/ 2' antennae In fact, it would backfire through the carb REALLY bad, so much it would completely stop the turning over of the engine and then start back up and repeat. Mechanical is working and goes all in by 3000 rpm. brad4570 · Registered. Footage taken from Holley Carburetor Installation & Tuning DVD 450 foreman backfire through carb. 10 min read Carburetor Installation and Tuning. also could be the boots. When trying to start it backfires through the carb. 0 & Type C7 Rims Cycle Country boot guards Rigid 10" LED Lightbar Jet-off road HID headlights Kolpin 3. Additionally, adjusting the idle mixture and idle speed screws to achieve the proper air-fuel ratio can help prevent backfire through the carb when starting the engine. After riding it it kind of goes away but once it idles for a few seconds it starts popping through the carb again. Ive been through the carb twice, its all clean, nothings plugged, its getting fuel and the air filter is clean and its getting plent of air. Spike976. Come join the discussion about modifications, winches, batteries, troubleshooting, maintenance, and more! The engine still stumbles and backfires through the carb. SBC 283 with 4 Holley 94. Matt's_Lost New Member. Share More sharing options Followers 0. Yamaha-Overfenders,Digi-Dash & Doors;Black Rhino-CDI backfireing through carb at low rpm and idle. It also does it sometimes when I let off the throttle. I installed new valves, rejetted the carb on to find out it wasnt the problem. I have done several 660's, 550's and a couple 700 now. clean and put it back together. Facebook; Pinterest; Instagram; YouTube; UPGRADED ALUMINUM INTAKE BOOT & ADJUSTABLE FUEL SCREW FOR 1987-2004 YAMAHA WARRIOR 350 YFM 350 CARBURETOR GASKET O-RING $ 109. A supply of clean fresh fuel (not sitting a year) A Spark at the right time. Hole 1 is set to -4 and hole 2 is set to -3. Rhino 660 backfiring thru carb. Share It backfires through the carb a little. I sure do feel like a damn From experience with my Yamaha SRX600 streetbike, I know the Yamaha's like to run them lean, and with a hole in your exhaust, this will increase the popping/backfiring. It starts right up, runs smooth, than backfires and stalls. don't be shy once you have the manual. What Causes a Backfire. My Warrior still backfires. Has a blue spark and is getting fuel. That is actually the combustion/explosion in the cylinder escaping through an open valve. almost all that have reported your symptems solved About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright I have a 07 660 rhino with aftermarket cdi box and clutch sheave,everything else is stock. Going crazy over this. I am not impressed with the longevity of the OEM fuel pump. useually with anything like that. It happens more frequently when the ambient temperature is above 85 What it does is backfire through the carbs and it blows the boots off. Jump to Latest A forum community dedicated to Yamaha Grizzly owners and enthusiasts. 358 Posts. I have cleaned the carb and put in a new spark plug. No intake leaks. By stultz33, August 13, 2008 in Sport ATV. 10 min read Share Troubleshooting - backfire through carburetor. It will either immediately die or stumble. I noticed a backfire from the rear cylinder from the pipe and the carb pops too. And i am not sure but i think it has a Stage 2 jet kit. I took off air cleaner thinking it might be clogged but it not. NOW I have a 98 grizzly 600 that runs like a top but also backfires. Compression. The symptoms are erratic idle (I had to idle it up so it will), and when throttled up it backfires and pops out the intake box and the exhaust with a little smoke that seems to be rich. or put it in a ultrasonic bath. Replaced the stator, pick up coil, ignition coil. Preventative Measures and Regular Maintenance Now getting a backfire through the carb (seems to always be the one over the 5/7 cylinders) on acceleration. com is not in any way affiliated with Yamaha Motor Company Yamaha YFM350 Raptor/Warrior ('87-Present) hanging idle, carb hiccup, dieing. Have checked the timing and appears to be in time. then can get so bad the bike can't run. i know u said u looked for cracks, but maybe a pinhole or a bad o-ring exists. My problem was worse when it was really cold out. I had a backfire so bad it damaged the diaphragm in the carb. I am having the same cough/pop through the carb coming off idle or blipping throttle between gears when down shifting. A forum community dedicated to Yamaha Rhino owners and enthusiasts. 23 volts, plenty of gas, I see the jet spraying fuel. So, new Warrior and the backfire and popping is driving me nuts. Once I take the lid off and remove the filter it runs better but it backfires through the carb. atv carbs are a cake walk. Any idea what causes a carb backfire? I have not done anything yet such as re-clean I know something similar was addressed a month or so ago butMy wife's 97 Warrior just developed carb backfire after sitting over the summer. There is less then 50 hours on this machine. Content on raptorforum. My wolverine backfired so badly that it would blow the intake manifold off the carb or the cylinder. GrizzMan2001 had a problem of back firing through the carb on his 600 Grizzly, it turned out to be a tear in the rubber boot to the intake. If the exhaust valve isn't opening properly because of a bad valve guide that would make Hi I'm a new user in desperate need of help. Recently my grizz has been popping/backfiring back through the carb at low rpms. carburetor tuning and adjustments. raptorforum. or Stage 1 im not sure. just get a factory manual and follow it to a tee. Now the popping and backfiring is back at mid-throttle. My 2006 660 is back firing through my carb bad. When you chop the throttle and use the motor to decelerate, if you get a stream of backfires, try increasing your idle mixture strength 1/4 turn at a time until the backfire goes away. 12/02/2009. Share More sharing options I have a 06 350 Raptor im working on and it's popping through the carb randomly as well only at idle. But after the third one still wouldn't do more than idle or if I did get it turned right wouldn't last longer than few minutes , blowing card off idle screw would vibrate out so out of 3 supposedly new carbs I couldn't even combine all 3 and make one my frustrations was overwhelmed lol I got lucky seen a og yamaha carb on Craigslist it looked what causes an engine to backfire through the carb? mine likes to do it from time to time when i am trying to start it in the mornings (engine cold). Valves have been adjusted, Used timin --- HEY GUYS Found what the Problem was ,,,, the Rubber Boot that clamps the Carb to the Intake was Ripped about an Inch ,,, almost under the Clamp ,, i took the Carb off prob for the 100 th time lol and when i took the Clamp off the boot i seen a tare on the inside ,, when i stuck my finger inside to check ,,it went right thru the boot !!!! soo for now i rapped some Diagnosing an ATV Backfire. 400 Engine sputters and won't start, backfires through Carb. Possible broken center intake valve spring. com is not in any way affiliated with Yamaha Motor Company VerticalScope Inc. 16 posts · Joined 2023 Add to quote; Only show this user #1 · Jun 17, 2023. ) Sometimes the engine would backfire through the carb. 99 $ 39. A forum community dedicated to Yamaha Rhino The car will run as long as it gets gas but will backfire through the carb some. Tags backfire starter Then if I kept trying to start it, it would backfire through the carb and you could hear the starter kick back. Y. it works perfectly when I test it with the carb Backfire through carb. 5:1,Full Flight +2 a-arms,Tusk +4 axle,Webcams . This most often happens because of old fuel sitting in the carburetor during long periods of sitting and non-use. At one point, it backfired through the carb, dropped back to idle and ran slower and slower til it died. I realized that after I spray carb cleaner in the carb is when it will give me the kick back. It will miss and backfire through the carb at low rpm's. When you backfire through carb Alright guys need some help here. Has been going on for way too long. Hopefully it is tuned properly, it sure has been running fine. The carb has been fully cleaned during my teardown of Finally your idle mixture is revisited if you have a deceleration backfire situation. It will start, but backfires through the carb and dies. Yamaha Kodiak 400 Yamaha Timberwolf 250 when the chain stretches the cam gets out of time This was not the case but after replacing the fuel pump and rejetting, this has been fixed. 700 posts A backfire through the carb is always caused by an open intake valve when the plug sparks. I have a 2000 600 that I bought a couple months ago as a project bike, I have managed to get it running now after installing a new carb, plug, flywheel key, adjusting the timing, and adjusting the intake valves, could not get to the exhaust valves with my feeler gage. 99 $25. To diagnose a worn valve seal, first, check for engine knock. The parking brake was stuck. But again, no matter how I adjusted the carb, it still would not idle reliably (would occasionally stall, and the RPM’s at idle would vary. Sounds as though you have some backfire. The only way to backfire through a carburetor is to have the incoming charge ignited. You need to check what jets pilot and main are in it. Unless you’re blind or dead, you won’t miss hearing the popping effect of a backfiring ATV engine. - Carb boots slightly cracked, sprayed brake fluid on them but made no difference. Motor, Transmission, Electrical, Intake & Backfire through carb causes stall. Notes: -When backfire/popping occurs lights get brighter or dim. This is a carb or timing issue. 6K views 3 replies carbs are not rocket science. The only way for a motorcycle to backfire through the carburetor is if there is an open path from your cylinder to the carburetor when the spark plug ignites. I've adjusted the main fuel mixture screw from 1-2. start with a quarter turn. The carb was nasty. I'm guessing that the bike wasn't dyno tuned SOURCE: Yamaha V-Star 1100 backfires and will not run without choke on. It restarts but problem continues. Yamaha YFM660R Raptor (2001-2005) Yamaha YFM350 Raptor/Warrior ('87-Present) Yamaha YFZ350 Banshee (1987-Present) When you purchase through links on our CDI teasted bad and was replaced with new, it ran fine for about 10 minutes then started acting like it was running out of gas, main jet was plugged so I had carb rebuilt and replaced manifold with new one. Its been sitting for most of its life. I don't have a high RPM backfire like you do though. Causing the intake valve to be open when the spark is arced across the plug at the 450 foreman backfire through carb. I see all the responses about the slow jet. think maybe timing or valves? Not much help mate sorry Cheers Noel "BLACK BETTY" Metallic Black 2009 Grizzly 700, EPS, Yamaha Fenders, Yamaha hand guards, 12" BLACK SS212's wrapped in 26" ITP Mudlite XL CUSTOM VALVE INCORPORATED TO RELEASE BACKFIRE PRESSURE. Took it for a test run. Timing way off or a burnt or leaking valve will also cause IF you are getting a backfire through the carb it sounds like its running pig rich under WOT. I'm working on a big bear 400. I called the carb place that rebuilt it, and they said it must be an electrical or ignition problem as a backfiring problem is 99% electrical. I have done the following to try and get the four wheeler running: Rebuilt the carb and set the air screw to 1-1/4 turn out and the circlip at middle position 3 Replaced the coil, Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. The backfire is caused by the leaking of air through the worn seal. I turned the carb around and the problem followed to the front cylinder then. Took me forever to figure mine out. I owned a 2000 yamaha warrior 350 and it was doing the same thing when i purchased it. I have been told that Yamaha has improved the pump and the new one is better. The valves are set correctly and its in time. New posts Warrior/Raptor 350 Technical. THE FIRST AND ONLY INTAKE YOU WILL EVER NE. The left air filter had a little fuel, but not much. A forum community dedicated to Yamaha Road Star Warrior motorcycle owners and enthusiasts. My problems is when I try to rev the engine it just dies. Timing was set to 10 initial. Backfires Through Carb. , 111 Peter Bought a 95 yahama warrior 350 running but needed a carb rebuild. Hey Brian, yes I ran into that problem. 5 turns out (hard to adjust when installed). I. Any help would be very appreciated. 2002 Yamaha Road Star Warrior transmission will not engage Have a Yamaha Road Star 1700 shifts into go but will not move or engage. Carb removed, cleaned, all passages seem I have read through a few post on this topic but have seen a definite answer yet. Is this the same on the 04 Sporty? I guess it is the same carb as previous years. i will take the carb off to see inside. I've taken the clutch off but I still can't find anything wrong. But after it warmed up it would hardly do it. Premium A golf cart backfires through the carburetor because of an open throttle plate. Joined Nov 20, 2009 · 14 Posts #21 · Jan 10, 2010. This can cause unburned fuel to exit through the carburetor and ignite, resulting in a backfire. after decel. I have a 1988 350 moto 4 that starts and idles great. I just didn't know if it needed more advance or needed to be retarded more to know which direction to move the wires on the cap. Please Help! Families that ride together stay together. Since fuel can't get through, the engine dies. I am also getting a regular backfire through the carb throat. 45. Messages 52 Reaction score 0 Points 6 Location Chicago. Yamaha YFM350 Raptor/Warrior ('87-Present) HELP!! Warrior carb backfire. Thread starter mikeyBskunk; Start date Apr 26, 2012; M. It generally makes a loud sound, like a gunshot, and occasionally is accompanied by a visible flame. 4. Posted December 4, 2022. It was like this for a while until I noticed it getting worse. com is an independent Yamaha enthusiast website owned and operated by VerticalScope Inc. sparking the plug when the intake valve is open. If the bike is coming slow down from reving it then for sure it's lean g22 Yamaha backfire. Got it cheap. carb; problems; warrior; By Blue May 11, 2015 in Yamaha ATV Forum. (when warming up) Once warm, it runs perfect and pulls hard at any rpm however, it does backfire sometimes but not all the time. A forum community dedicated to Yamaha Road Star Warrior motorcycle Just picked up two weeks ago an 04 1200c for my wife w/ SEII pipes, air box, and carb kit. H. the problem with carbs is that it is foriegn to most people and that scares them. If it's an intake valve that is staying open, it will backfire through the carb. I had the idle mixture screws out around 3 turns or so. warrior; By Spike976 October 1, 2020 in Yamaha ATV Forum. Yamaha YFM350 Raptor/Warrior ('87-Present) Warrior 350 starting problem. At this point you're halfway done. 1 2. Vacuum advance pulls another 15 or so, on the manifold. but has been minimized since I installed a PCIII and downloaded a map designed for my mods. make sure fuel filter and air filter is clean. Ive been through the carb Ok so I just bought a 1990 yamaha warrior 350. I have triple checked cam to crank timing, I put a new similar vacum operated slide carb from a DRZ400S. -Idle is unsteady and speeds up and slows down randomly. Have tried different jetting, had a few different MC mechanics look at it for this issue, Speed sensor replaced,and still have not been able to shake this cough/hiccup. I just bought a 98 Warrior and it idles great (when it starts) but when you give it gas it falls on its face, backfires and dies if you get all the way into it. 1987 TRX125 1985 Suzuki LT50. I really suck and adjustments. mikeyBskunk XS650 Enthusiast. i have also noticed that it has a slight 'diesel' effect when i shut it off fom time to time (turn of key Recently replaced the following parts on Yamaha 350 Warrior. After re-tuning, I noticed the idle mix screw had to be 3-1/2 turns out, which is way off from the factory spec of 1-1/2 turns. It ended up being a broken key way ! so it was throwing my timing off . Understanding the different parts of the carburetor can help in troubleshooting and maintaining the ATV. B - Alternatively (and for the less technical minded) there is a great product called Sea Foam. Thread starter 97warriorrider; Start date Feb 23, 2008; Help Support Yamaha Raptor 350 & Warrior Forum: Air Filter & Guide & END CAP Kit For Mine was pretty bad at start up. I cleaned it all out, new plug, new gas, it ran ok. I replaced my valve seals, but that did not help the smoke. Bill Tichenor. 0 inlet valve, 170 main jet, Mikuni 3. Top Contributors this Month View All. Once the engine warms up, after running for about 5 minutes, the backfiring stops, but I do get an occasional light pop from the exhaust on deceleration. Good afternoon, After replacing plugs, wires and adjusting Valves my 400 wont start. If i ease on the throttle it will rev but it sputters and will backfire through the carb. Hey, thanks guys, it backfires through the carb as I'm trying to get it started, I'm sure I've got fuel, bowl seems pretty full when bleed screw is loosened. blow compressed air through all openings and reassemble. Found the ECU mod to change the mixture per hole. 75 pilot jet. will be idleing, and give it a little gas and POP, off goes the carb. Posted by Anonymous on Apr 04, 2012. Equally tightened exhaust at the heads. (from cam gear being out of time) it will backfire and blow the carb off if valve is bent enough. Have tried both stock pipes and long shot straight pipes. Yamaha warrior backfire thru carb - 2002 Yamaha Road Star Warrior. Seem to help for a day or two, and then POP. Would def. On more than one occasion it seemed to backfire at the carb, almost like the engine missed. Come join the discussion about performance, modifications Went to fire up the warrior after sitting for a few months. Save Share I once had an old riding lawnmower that was back firing through the carb . Yamaha Spitting back through carb. Tags 07 rhino backfire But now that I've ran it again I realize that the small backfire through the carb that I'm talking about is actually more when you start to ease into the throttle or hold it at low RPM's. 1 turn out on all 4 seems to give the best response. Look at the needle and seat. YorkGTO Discussion starter. Yamaha YFM660R Raptor (2001-2005) Yamaha YFM350 Raptor/Warrior ('87-Present) Yamaha YFZ350 Banshee (1987-Present) Other Models/Brands General Yamaha ATV Discussions. If it's an exhaust valve that's staying open, it will backfire through the exhaust. A golf cart backfires through the carburetor because of an open throttle plate. Save Share Golf Cart Backfires through the Carburetor. The exhaust backfire I am experiencing happens mostly when the engine is cold, on deceleration, (between shifting gears). hosdf sysbns zamihd csrg yqwg hkkq ilkdm fpo lyrjwp usvht