Hyundai gdi valve cleaning. This is where i decided to spend my time.
Hyundai gdi valve cleaning In most cases Techron gas additive doesn't do much for cleaning GDI engine intake valves because the mixture never reaches the Intake Valves *Now I read where just for an instant Hyundai / Kia GDI engines provide a brief "squirt" of gas to the intake vales of their GDI engines at start up so there is a chance some Intake Valve Cleaning cleaning may now be Hyundai Carbon Cleaner Intake Valve Walnut Blasting Adapter for GDI engine. I recently learned that I can help maintain the engine if I occasionally clean the air intake valves as they get quite dirty in GDI engines. Now the car is throwing P0106 Manifold Absolute Pressure and the car is running in a low power, high RPM mode. I used CRC GDI IVD Intake Valve Cleaner yesterday exactly as per CRC's video and instructions on can. If you're not doing dealership service, do so yourself at 3000 mile intervals. 0 MPI --- Mobil-1 EP / Euro FrankenBlend (SP) -(Southeast Michigan) Save Share Perform the CRC GDI Intake Valve & Turbo Cleaner right before oil change is recommended. You can actually spray it before the turbo and it will clean the turbine blades. 4L GDI allows for 10W30. One way to tackle it is through intake valve cleaning every 30,000 miles. Common GDI-Related Issues and Solutions. 4 at 7,400 miles. There are also some products, other than Seafoam or BP, specifically designed to be sprayed into the throttle body to remove some of the intake carbon build up. Pali_Bob Member. You can also purchase CRC GDI Intake Valve spray cleaner a-lot cheaper. Higher maintenance costs: GDI engines can sometimes have slightly higher maintenance costs due to the more complex technology and the need for specific cleaning LOL wasting money, is all it will do - you are right. I remember a thread about the dangers of using an Intake Valve Cleaner on our GDI engines and how the dissolved crap/carbon from the stems of the intake valves ended up damaging the Converter. 4L engines. I know on my 3. we sell the BG products at our shop. Save Share Reply Quote Like. New Posts New Media New Media Comments Latest Activity. Even though threads get hijacked and shared photos get deleted/edited, you can figure it out as seen in this thread: (Techron System Cleaner, Hyundai , or something like BG44K) to keep the pistons and I've used the CRC cleaner, but I didn't snap pics of the valves before and after since I didn't feel like taking the intake off. 272, but you need an injection apparatus to do it. CRC GDI intake valve cleaning on Elantra GT 2014 2. The vacuum hose coming off the PCV fitting is super easy to get to - the feeling though is I might not reach all 4 Also -- CRC GDI Intake Cleaner - - - This is the only aftermarket spray approved for turbo use. Come join the discussion about classifieds, troubleshooting, turbos, maintenance, performance The spray can or metered/orifice liquid solutions can be adapted to any make/model carb, GDI, or MPFI engine to clean those valves. Then later they state that you can suggest it for any kind of fuel system. I've read that on a GDI engine, blowback crankcase fumes and contaminants recirculated back through the PCV valve into the intake manifold, tend to carbonize on intake valves because with GDI, fuel is injected directly into the combustion chamber, not into the intake port above the intake valves - with no gasoline . I'm looking for a video on doing so for my particular engine as the videos I found were for the 2. v-power does a good job at cleaning fuel system like injectores & exhaust valves but it will do little at cleaning intake valves for that CRC intake valve cleaner CRC GDI IVD Intake Valve & Turbo Cleaner's advanced cleaning technology dissolves baked-on carbon deposits, improves MPG, increases power and reduces rough i Regular cleaning can prevent many issues linked to GDI engines. 6L has ever needed valve cleaning at a low mileage. VW have a well known issue with this. Wife has a 2015 Kia sorrento 2. Some companies, like Hyundai, perform chemical cleaning processes as a part of the regular maintenance (I have 1. Hyundai dealership tech here, it's not a money grab as the intake valves get covered in goop because of the way GDI works. H. I like CRC GDI Intake Cleaner, $ 10, easy to use, takes 10 minutes to instill and then wait 30 min and take out for a drive. The issue with carbon buildup on the intake valves is common on every GDI engine, regardless of the manufacturer. I never paid much Anything you add to the fuel tank will be very limited in cleaning the intake valves as the GDI engine sprays the fuel directly into the combustion chamber and bypasses the valves. To assist with keeping steady RPM's during the procedure, either wedge a PVC pipe Time for the Hyundai GDI to have a intake valve cleaning with CRC Spraying into the throttle body intake requires some disassembly of air dam and awkward to get an easy spray pattern into the throttle body (doable but a pain) . OP . very-very minimal, but it will help some what) back on topic: yes, adding seafoam do we need to use the CRC GDI intake valve cleaner in our Hyundai Palisade? Menu. Sometimes sounded like rocks in a coffee can, but worked. From what I've read, we can expect valve crud to start causing engine problems at 40k to 70k miles. So i have a 2016 1. Active Topics. seafoam is DIY friendly. Easy-to-use CRC GDI IVD® Intake Valve & Turbo Cleaner is sprayed through the air intake. I use the GDI intake cleaner, but Seafoam gets good reviews as well. Google it and re-do the treatments every 12k. Here are effective methods and products to clean intake valves: Chemical Cleaners: CRC GDI IVD Intake Valve & Turbo Run vehicle empty, visit top tier fuel station, add above bottle of fuel tank FI/topend cleaner, and refill tank with highest octane fuel (93 at the local BP for me). This year; about a month or so after my yearly treatment, I started getting a code for my O2 sensors. Ended up they had to replace my Catalytic Converter, luckily it was under warranty. Most effective for use on Gasoline Direct Injection engines. 271 Part No. Early (2011) Velostar and other Hyundai GDI motor vehicle forums have titles such as "you need a catch can" - however, I can't find any evidence that any Hyundai 1. Prices ranged from $99 to $149, and none of the shops really explained what was done, or the service. New Posts Search Forums. Is your DI engine running poorly? This may be whyCarbon buildup on intake valves is a special consideration for Direct Injection (DI) engines. Once I completed this extremely inexpensive simple maintenance Using CRC GDI Intake Cleaner on my '18 Hyundai Sonata Limited 2. So I just recently purchased a brand new sparkling Santa Fe, with a 2. The two feel inversely Hi All. Carbon Deposits Reduced Intake Valve carbon build-up cleaning solution. bgprod. It is caused by the engine blow by gases redirected into the intake manifold and no fuel being injected into the intake to allow additives to clean the back side of the intake valve. View video to learn how auto repair shops can solve GDI engine intake valve carbon problems easily with CRC IDV Intake Valve and Turbo Cleaner. Hyundai Kona Forum - the best place to talk about the new Hyundai Kona, the new city SUV and its upcoming Kia twin! Show Less . Always use Top-Tier gas, and if your Hyundai has a GDI engine, use CRC GDI Intake Valve and Turbo Cleaner before an oil change. The only true way to determine if any cleaning process The early GDI Turbo's had some issues, but later (designed in past 5 years) GDI and GDI-T from Hyundai/Kia (and other makers) have addressed most of the issues. I'm going to be doing the GDI cleaning next week. The GDI cleaning isn't quite so dramatic, but that heat soak after application really is important. Intake Valve Carbon Cleaner Walnut Blasting On my GDI 2014 S. Home. This is an older thread, you may not receive a response, and could be reviving an old thread. 6L Non-turbo GDI Engines – BG Products, Inc. Our engines use a MAP it is ok to just go down the intake and it will clean the throttle body and if you have a turbo the turbo as well News - GDI IVD INTAKE VALVE CLEANER FOR PROFESSIONALS . 6L Turbo engine Hyundai Tucson and just realized i need to clean the GDI engine valves via The following is tutorial for using CRC GDI Intake Valve & Turbo cleaner; Save Share Reply Quote Like. This is where i decided to spend my time. com Save Share Reply Quote Like. com/fupabox Visit Garage Gurus http://fmgaragegurus. 4 GDI - Mobil-1 EP / Euro FrankenBlend (SP) 2020 Kia Soul X-Line 2. week I found a video on YouTube telling me how important it is to clean the intake valve so I purchased a can of CRC GDI Intake Valve Cleaner for 15$. Anyways, I bought a 13 dollar bottle of CRC GDI Intake Valve cleaner from Amazon, decided to try it out. 4 GDI - Mobil-1 EP / Euro FrankenBlend (SP) On a GDI usually a fuel system cleaner in the gas tank and also use a GDI Intake cleaner like CRC GDI Intake Cleaner (or any of the other specific cleaners for GDI) sprayed directly into the intake to clean the intake valves since no fuel passes over them they build carbon The CRC GDI IVD Intake Valve Cleaner and Gumout All-In-One did the trick to clean up her rough idle. lokito50 · Registered GDI Engine Valve Cleaning. I used the air duct connection just behind the air filter box to spray the cleaner. Hyundai Santa Fe Forums. CRC GDI intake valve cleaner. The only way to actually clean the valves in a gdi engine is to physically remove and scrub them. Has anyone else done this? I've been reading and looking through Carbon buildup in GDI engines is a well-known issue. I have always sprayed it in just behind the air cleaner box so it goes through the whole intake system, turbo - throttle body -intake and valves /pistons do we need to use the CRC GDI intake valve cleaner in our Hyundai Palisade? P. At 22k ish miles right now. www. ultraviolet Discussion starter. know to clean the intake Valve spray a bottle of CRC Intake Valve Cleaner through the throttle body with engine hot & idling slightly higher than normal it might take 2 cans to fairly clean it Also early in the video, when discussing the difference between conventional port FI and GDI, they discuss what a great job modern fuel does cleaning the valves. You can also perform a *direct application of water into the intake that can do a great job to reduce and clean the intake valves and also combustion chambers exhaust and top of pistons. 4. Community dedicated to the Hyundai Elantra N/i30 N/Avante N 🏁 - Please search threads before posting questions 😁 -User flairs are active to select your color and transmission😎 I have a can of CRC GDI intake valve cleaner I need to get to at some point. Might be good idea to pop hood at car wash and wash Easy-to-use CRC GDI IVD ® Intake Valve & Turbo Cleaner is sprayed through the air intake. You’ve probably tried fuel injector cleaner or for your motor but the engine is still running poorly. 4 AWD GDI engine, now I have been reading a lot about these GDI engines that are pretty hard to avoid these days, so I am a bit concerned about the intake valve build up that can cause a bunch of issues, such as decreased power, less fuel efficiency, misfires and more. I also use Lisle 48700 Throttle Pedal Depressor to assist with Anything you add to the fuel tank will be very limited in cleaning the intake valves as the GDI engine sprays the fuel directly into the combustion chamber and bypasses the Hyundai & KIA GDI Engines deliver increased power, performance and gas mileage. if you want to use the BG product you want to use the BG Gasoline Direct Injection CleanerPart No. The dealership wants $275 to do it, so I'm going to give it a go myself. ⛽ I called around a few indy shops to get a price to have the GDI cleaning done. GDI IVD? Intake Valve Cleaner, 11 Wt Oz - Product Information . The CRC GDI Service Pack includes everything needed to remove carbon at 6 critical points in the engine: MAF sensor, throttle body, combustion chamber, intake valves, spark plugs, and fuel injectors. 4l, same engine as the Santa Fe. It has high levels of PEA that will help control carbon deposits on the intake valves since your gas doesn't wash over the tops of them. I have never used the HF equivalent, but this BMW tool works extremely well. Subreddit dedicated to the auto maker Hyundai. This buildup can lead to poor performance and engine stalling. In a gdi engine, the chemicals never touch the valves as they are sprayed directly into the combustion chamber. These smaller Hyundai engines definitely experience lag, but it’s way different from a transmission slip. That manufacturer offered it as a solution for certain models with GDI engines between 2006 and 2016, though GDI engines from other brands made around the same time period, such as Audi and Volkswagen, may benefit as well. If i can't clean my intake valves with an additive then i wanted another option and for me, this was it. ; Fuel Additives: Products like Sea Foam or Techron can help reduce buildup Somewhere I saw a Hyundai animation that showed the pilot injection during intake with the intake valve open and in the target area of the fuel, spraying across the back side of the intake valve, cleaning it. 1 2 Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from the Sonata to the Elantra and even the new Kona! I have a 2016 3. I cant say it was all from the CRC GDI Intake Cleaner but at $ 10-15 a can its cheap preventive maintaince. I ordered the CRC GDI Cleaner. . Sep 25, 2019 #1. And there are a lot of other threads on here saying how bad the intake valves look on (non-Hyundai) GDI engines, and how much faster/better/smoother the car ran after the valve cleaning. 2011 Hyundai Sonata. if not serviced approx 30k or so miles via a fuel induction and injector hot soak/cleaning it WILL cause other problems down the road. com It shows that it cleaned the intake valves, fuel injectors, and cylinder heads. This How often should I clean the intake valves on my Hyundai GDI engine? Intake valve cleaning is recommended every 50,000 miles, but the interval depends on driving conditions and fuel quality. TiGeo $50 site donor 2024. The upsell stuff is a little fishy, but I'm convinced it's a good product to use, at least for GDI engines. I know BMW, Volvo, etc have trouble with maintanace, and often need valves removed and cleaned every 30,000 miles. If interested in 【Convenience】Manual carbon cleaning is time consuming and near impossible to remove all carbon buildup. This is the factory BMW tool for intake valve cleaning. it is sprayed into your throttle Getting serious, Hyundai GDI engines don't use EGR technology which lessens intake valve carbon buildup. Then used tube taped in shop vac to remove junk/cleaner. 0 MPI to clean the Exhaust Valve the pour in 44k works well, or You could Just use Shell V Power has 5X times the detergent cleaners than any other Preamuim fuel use it every other fill up. Today I gave CRC intake Then Katie bar the door when you started those beasts back up. 🌡️. Recommend performing an oil change after using the CRC GDI IVD Intake Valve & Turbo Cleaner treatment. Even with the Atkinson cycle engine delaying the closing of the intake valve on the pressure stroke it's still not enough to prevent carbon buildup. 3 in the Santa Fe (regular GDI), the engine is designed to spray a little fuel on top of the intake valve when it is open, then a full injection of fuel once closed. If you really want to keep your intake valves cleaner then I would suggest using something like CRC Intake Valve Cleaner sprayed through the intake once a year like There's a reason the service interval for severe duty (all of Canada) is 3750 miles (roughly 5000 km) using synthetic 5W-30 on these cars. GDI or gas direct injection engines, they're great engines but then need a bit more GDi Intake Valve Cleaning Hyundai Sonata, Elantra, Tucson 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 more. 6 liters This problem can be mitigated by regularly performing an intake valve cleaning. I did put days into researching the company and it's products and many a mechanic swear by them. I do the induction cleaning for the valves every third oil change (my Hyundai dealer will do them every 10-15,000 miles at a cost of $280!). I was just in to buy some oil filters (I do my own oil changes) and my Hyundai dealer sold me some fuel system cleaner to keep my intake valves clean as per TSB 13-30-008 (Canada). 2019 Hyundai Santa Fe 2. The turbo was very clean as well. Messages 5 Likes 0 Location I currently have a 2019 Hyundai Tucson 2. BG providers offer an Fuel system/intake valve service where they use their products to clean the fuel system as well as spraying cleaner directly into the intake valve. Thread starter allendaguplo; Start date Sep 23, 2019; A. It contains the highest Concentration of PEA (Polyether amine) detergency which is delivered directly to the backs of the GDI intake valves and removes up to 46% of carbon deposits in the first 60 minutes. Hyundai does not use a MAF and that is what you have to avoid but spraying after the MAF sensor. Don't annoy 2011-2017 Hyundai Accent GDI intake cleaning and spark plug replacementfollow me on twitter https://twitter. I spray the GDI in while running before each oil change at 5k, and plan on doing another manual cleaning every 20k as maintenance. Come share news and pictures and discuss everything related to Hyundai. Full Forum Listing. Kia/Hyundai 1. Best practice is to try and minimize the build up by only using "top tier" gasoline (as stated in the owners manual) and optionally adding a fuel / intake cleaner additive (like Techron) to the gas tank at regular intervals. But if it is a fuel system 2019 Hyundai Santa Fe 2. I would expect that most i30N owners would follow Hyundai's recommendation and use higher quality fuel, so I'm unsure whether using their "GDI Fuel System Cleaner" would lead to any benefit. F. i use shells V-Power Nitro 7X times the cleaners added than any other fuel sold in Canada i use it every 3rd tankfull if Your running this fuel You wont need to use fuel injector cleaner. I remember a thread about the dangers of using an Intake Valve Cleaner on our GDI engines Hyundai & KIA GDI Engines deliver increased power, performance and gas mileage. To find these videos, search "CRC Intake Valve Cleaner". 3L V6 GDI engine). Direct Inject intake valve port Carbon Walnut Blaster Cleaner Adapter for: Hyundai 4 Cylinder GDI Engine Is your Hyundai turbo or non-turbo car performing poorly, having direct injection problems, getting an engine Only way to efficiently remove the coke from the backs of the valves is mechanically (media blasting etc) I have sprayed straight water from an atomising pump sprayer filled with distilled water to de-carb combustion chambers on non-GDI engines with some levels of success. If you notice a decrease in performance, misfires, or rough idling, intake cleaning may be due. crcforshops. With GDI engines use very good fuel change you oil often change air filters once a year and PCV valve every 40,000 miles and that intake cleaning done by a pro every 40-45,000 miles. Do a search in the search engine, it's been discussed at length. 6 GDI engine (G4FD) Gamma: Engine displacement: 1. I did the CRC intake valve cleaner yesterday. I tried CRC and the Seafoam cans, and they both performed adequately. U. Jump to Latest 21 - 23 of 23 Posts. Without vacuum there won't be any brake booster assist or turbo diverter valve operation (and possibly wastegate, can't remember if it's electrical or vacuum there) so don't drive it with the hose off but for the purposes of spraying I used longer spin brush in drill and CAREFULLY cleaned and used pick to scrape as well. Done correctly, you shouldn't need to repeat a week later. I believe hyundai does this also on their DI engines. Messages 5 Likes 0. Joined Nov 5, 2009 Messages GDI decarbonize/ intake valve cleaning tonyt2293; Sep 29, 2024; Mechanical/Maintenance Forum Features of the Hyundai/Kia 1. 497 posts · Joined 2019 Add to quote; Only Just performed another CRC Intake Valve & Turbo cleaner process. It is impossible to fully eliminate intake valve deposits on GDI engines based upon their inherent engine design, due to lack of any port injectors to wash fuel over the valves. Compared to conventiona He is a Hyundai Technician and has basically said that he feels this cleaning is used to transfer money from your wallet to the Service Advisors wallet. I followed the "The walnut method of intake valve cleaning may be best known to owners of BMWs. Believe this to be alternative location to spary CRC Intake cleaner. You will always need to get a fuel system cleaning every 30k miles or so IMO. Gumout Regane, Redline SI1, Amsoil PI, 3m, Chevron Techron Concentrate, RoyalPurple Max Atomizer, And, pick up a GDi Intake Valve Cleaning Hyundai Sonata, Elantra, Tucson 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020intake valve cleaning,intake valve,intake valve If your engine is really GDI there is no need to clean the intake valves since the only thing that should be flowing through the intake ports is clean filtered air. This video c GDI valve build up (carbon) is a problem on most if not all direct injection engines especially turbo charged ones. Safe on turbos and inter-coolers. DESCRIPTION: Dissolves baked-on carbon deposits, increases power and reduces rough idle. Also run mid-grade fuel or Premium and use Techron Concentrated Fuel Tank Cleaner every 4k or-so. Oct 3, 2019. Messages 44 Likes 2 Location Sioux City, IA, USA. i spent about 30-45 min working on each set cleaning them out. A forum community dedicated to Hyundai Veloster N owners and enthusiasts. Carbon is the ene Water injection or water/meth systems work very well (see Snow Performance kits) to cure and prevent intake valve deposits. I think it's a waste of money to do that. This is not restricted to Hyundai engines. Forums. Chunks of carbon would let go from the piston domes, heads, valves. the 44K is added to your gas tank and cleans the fuel system, and will NOT clean your valves on out GDI engines. com for more tips and information on diagnosing and troubleshooting engine problems in your vehicle. Please consider creating a new thread. Thread Starter #2. Although to be honest most of that is due to ash contamination of the oil that is common to GDi The Ultimate Guide to DIY GDI Carbon Cleaning ( Gasoline Direct Injection Intake Valve Cleaning )In this video I'm going to take you through everything you n As a new member, I am somewhat surprised that I don't see anyone mentioning the problem of carbon/gunk buildup on our gasoline direct injection (GDI) engines. A. Discussions about Hyundai Group corporate cousin Kia are also welcome, though they should really go in /r/Kia. 4L GDI (non - turbo) Sonata LTD with 15K miles Here is where I went wrong : Out of ignorance / stupidity , I sprayed the CRC intake valve cleaner sideways through the left facing "nipple" which I have a 2016 Hyundai Santa Fe XL (3. It contains the highest Concentration of PEA (Polyether amine) detergency which is delivered directly to the backs of the GDI intake valves Visit local auto part store or walfart and buy a bottle of PEA based quality FI cleaner for the fuel tank. Unless of course the engine is worn to the point that oil is entering the intake path in significant amounts past the valve guides - 2014-Present Hyundai Sonata From the makers of trusted products like Brākleen® and Mass Air Flow Sensor Cleaner, CRC delivers another best-in-class solution for vehicle maintenance and repair. I will try to locate it. 6 T-GDI in my Elantra), some others blast the intake valves with walnut shells (BMW for example). Below, find atached photos showing location of PCV valve. I've used on several GDI engines and every 15K miles. Joined Jul 15, 2008 · 562 Posts #43 Hyundai Forum is a community for all Hyundai Owners to talk and learn all about their favorite subject: Hyundai cars from the Sonata to the Elantra and even the new Kona! The Hyundai manual for the 2. I got a can of CRC intake valve cleaner and was going to use it, only to be met with wires and a radiator hose in the way of me removing the TB inlet hose. Walnut blasting drastically speeds up the process and will leave you with a cleaner valves! 【Compatibility】Compatible with Hyundai 4 Cylinder GDI Engine 【Service Guarantee】We prioritize your satisfaction. Been noticing some hesitation and rough idling lately and read up on these GDi motors that they need the intake valve cleaning. You can see the engine shaking and hear the RMPs dropping as I spray it in In the past decade, Gasoline Direct Injection engines have become extremely popular with both domestic and import auto manufacturers. How can I prevent carbon buildup in my Hyundai GDI engine? Carbon buildup in GDI engines is a well-known issue. but others do like the ford gdi ecoboost. They are GDI or gasoline direct injection engines, they're great engines but GDI engines do have a real problem of creating excessive carbon build up on internal engine parts. allendaguplo New Member. Some manufactures are now using both direct and indirect injection in some instances to keep the intake valves clean. Using small flat head and an assortment of picks to scratch and pick away at the buildup. FI Cleaner Hyundai rebottled (Chevron Techron), will be added by the dealership at particular service intervals. 4L GDI engine (non-turbo), 40,000 miles. They didn't say anything about the intake valves tho. 0 L. 8 Genesis Coupe with a GDI engine. Likes: allendaguplo. When I went to the dealer yesterday they recommended an injector cleaning for GDI engine at 25K, I told them the injectors are clean from the fuel cleaning I use. Tier 1 fuel really doesn't matter with a GDI engine as the fuel never washes over the valves to aid in cleaning. HSpeed · Registered. Long time lurker - first time poster I decided to use CRC Intake Valve Cleaner on my 2017 2. The Gumout costs me $8 at Walmart and the CRC was $17 at my local auto shop. Here are effective methods and products to clean intake valves: Chemical Cleaners: CRC GDI IVD Intake Valve & Turbo Cleaner is specifically designed for GDI engines and can help dissolve carbon directly via the intake system. Engine has to be hot and the throttle cracked open to allow atomised water to pass Direct Inject intake valve port Carbon Walnut Blaster Cleaner Adapter for: Hyundai 4 Cylinder GDI Engine Is your Hyundai turbo or non-turbo car performing poorly, having direct injection problems, getting an engine misfire, having gdi engine problems or are you looking to get rid of your "Reduced Power" message form your Hyundai GDI? Then you are in luck! This tool allows you I used to use the “CRC” branded stuff on our 2017 Sante Fe, usually every spring. It has PEA in it - - - the ONLY chemical that can survive the heat in a combustion chamber and clean your exhaust valves and piston tops. 18K posts 12K members GDI Valve Cleaner (32548) - 500 ml, Case of 12 Units. Spark plugs every 60,000 miles not 95-100,000 miles From what I've read elsewhere, the Hyundai product is recommended only for their models that typically use low quality, high sulphur petrol. Explore Our Forums. Additives to the gas tank clean the injectors but not the valves in these engines. on the newest design of their GDI engines, KIA/Hyundai actually provide a short spray of fuel during the period when the intake valve is partially open and given the way they have positioned the injector in the cylinder this spray appears to hit the backside of the intake valve. I own a 2016 Kia soul with 35k miles last week I did a CRC GDI Cleaner which was so simple I watched a girl do it on YouTube. GDI engines often face problems like carbon deposits on the intake valves. Many have recommended intake valve cleaning services every 20-40k miles. i stand corrected LOL (on normal injected engines it will do something. More Tar Goodness here. APPLICATIONS: Air intake valves on GDI or standard fuel injected engines I don't believe the Hyundai has any carbon build up beyond the norm. Sep 23, 2019 #1. mwqyiotahszngexuqtydfqgtypxhzdvmhnqidapjuwfjwoeqyrtjtpojysjgdkvfzckww