CRC GDI IVD Intake Valve & Turbo Cleaner

Uses this on my wife's cx9, my cx5, and my trailblazer, with impressive results! Follow the simple directions to a T, and I personally recommend changing sparks plugs after, you burn a lot of crud. Definitely more power, faster acceleration, and even gas mileage has improved. Well worth it, likely to become a part of my yearly tune-up regiment.

It works right away

Have not used it yet, but I expect good things as this is a quality brand that typically works well as far as their other products. Arrived quickly and undamaged.

First off I will say that my car was not experiencing any symptoms before using this product, and I did not bore scope the intake valves to see what they looked like before or after treatment, so I cannot say that this product fixed anything. What I can say is that it did not make anything worse. I bought this as more of a preventive measure to excessive carbon build up rather than waiting for something to go wrong, so only time will tell if it did the job. Secondly I will say that I used this on a 2014 Ford Focus SE with a GDI 2.0, with about 49,000 miles on it. Its been about 700 miles since the treatment and so far there have been no noticeable ill effects. As far a the treatment goes it is, as others have said, somewhat involved. I did the warm up of the car and had a friend hold car above 2,000 RPM, he actually said he had to hold it closer to 3,000 RPM to keep the car from stalling. I used a vacuum line down stream of the MAF sensor for the application and I used between 3 and 30 second bursts depending on how the engine was handling the bursts. When the can was empty I had my friend do the 3 revs of the engine just past 3,000 RPM. That's when a guy came by to make sure everything was okay. He said he thought the car was on fire because huge plums of black smoke were coming from the exhaust. I presume this was some of the carbon being flushed out of the system, but it could have also just have been a really bad air to fuel mixture because of the cleaning solution that I sprayed into the system. After waiting the 1 hour soak in period I took the car for a short drive. There was an odd sound from the engine and the check engine light came on. Then the car drove normal. I cleared the code and it has not come back. I also checked my oil which was noticeably darker than before the treatment which also leads me to believe that some carbon was cleaned out. For what it is worth, I also did a spark plug change afterwards and the plugs were not carbon fouled. All things being equal I would say that I would use this again and I feel fairly certain that it did some kind of carbon cleaning, maybe it was just from the side walls of the intake or maybe it really did clean up my valves to some degree, only time will tell .

I used this this weekend on my 2001 car with 65,000 miles on it, it also has a mpi type of injection instead of the gdi as it is commonly used on. The car did not smoke white once during it's use spraying the production in as some have mentioned but it did idle rough as soon as I disconnected the air intake hose from the throttle body. I don't think the spray itself made the car idle any worse. But when the spraying was done, removed it and reconnected air intake hose and it immediately idled smoothly again and then I shut it off and let it sit for the time required. After that time I took it for a drive which was still smooth, but after a while of driving the check light flashed a few times off and on and then went out. Sometime thereafter the big cloud of white smoke came out of the exhaust and then nothing else out of the normal. Now today, a day later I noticed the car is idling as smooth as it did when it was new and also is very hard to hear running it is so smooth and starting is better too. I have to guess that it did work. It has increased take offs and overall power so I suspect it will affect the gas mileage too, when I check that. Thank you.

Used CRC GDI IVD Intake Valve & Turbo Cleaner on my 2011 Sonata with the 2.4 GDI engine—super straightforward process. Disconnected the intake, followed the directions, let it soak, and took it for a good Italian tune-up afterward. Whole thing took maybe 15 minutes plus a fun drive. Now, I don’t have a borescope to check before-and-after carbon levels, but I swear the car felt more responsive afterward. Idle smoothed out, throttle felt a bit sharper, and low-end torque seemed to wake up a little. Could be the placebo effect, sure—but if it is, it’s the best placebo I’ve tried in a while. For a DIY option without pulling the manifold, this stuff’s hard to beat. I’m pairing it with BG 44K next tank for a one-two punch. We’ll see how it holds up over time, but so far? Worth it. If your GDI engine’s acting a little sluggish, hit it with this and see if it doesn’t start acting right again. Would absolutely recommend—especially for higher-mileage GDI engines that’ve never had the valves cleaned.

Tried this in a 1.6 Hyundai Gamma II GDI engine that they put in the Kia Soul's. (Yes, Hyundai makes a lot of Kia's parts, including that engine). The proper way to clean intake valves on a GDI (direct injection) engine is to REMOVE the intake manifold and walnut-blast the back side of the intake valves. BIG JOB, and not always necessary. I inspected the intake valves with a borescope BEFORE and AFTER I used this product. It cleaned the intake valves very well! I've long used CRC products, and this will be another one I recommend every oil change, because, why NOT! Keep those valves as clean as you can, it will improve gas mileage and prolong the life of your engine. It will prevent carbon build up. NOTE: If your intake valves are too dirty, you will need to remove the intake manifold and clean the proper way. But this product works well, especially if you have a new car and begin using it right away at least every 10,000 miles, or every 2-3 oil changes. On the Kia Soul, I removed the brake booster vacuum line and sprayed the CRC direct injection intake valve cleaner into the system that way. SECOND NOTE: DO NOT SPRAY CRC INTAKE VALVE CLEANER IN THE AIR CLEANER/FILTER BOX, IT WILL DESTROY YOUR MAF (MASS AIR FLOW) SENSOR.

Siguiendo las instrucciones es muy fácil de usar. Asegúrate de aplicarlo por la succión correcta de tu motor, si tienes dudas busca en youtube como hacerlo para tu vehículo en especifico. Lo use hace años en una Mitsubishi L200 2.5 Turbo Diesel, cuando esta tenia 120 mil kilómetros, use dos botes ya que nunca había tenido una limpieza de válvulas y rejuveneció el motor. Y lo acabo de usar en un Subaru 2.0 no turbo con 23 mil kilómetros en el odómetro, y aun con tan pocos kilómetros el resultado de la limpieza de válvulas fue notable. Pienso seguirlo usando cada 20 o 25 mil kilómetros. Si no lo encuentras busca otro producto similar que contenga PEA (Polieteramina) y úsalo de similar manera

Works great to clean carbon from valves! Expect a lot of smoke for awhile after applying solvent! Engine runs better! Less hesitation and better gas mileage!

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Tried it this morning and to be honest it was kinda scary to use. As you know any foreign chemical inside the cylinder can and will break your engine. My Kia Rondo was suffering from carbon buildup and I was losing a lot of mileage and power during acceleration. Emptied a whole can of it and waited for 1 hour to heatsoak the carbon. So me and the wifey drove around the block then there it was the big puff of white smoke came out of the tailpipe. I thought well its ok as what the reviewers say but the valve knock and the loss of power scared the heck out of me. I actually smokescreened an entire block around our area and people were looking at me saying that my engine is toast. I was quiet and trying to gather my thoughts on what happened as I looked on the dash and the it threw a CEL which I told my wife about it. we were silent and thinking. Me about the car whereas my wife calculating how much we will spend on a whole engine! XD. I pulled over and revved the engine just to remove the smoke and after that I did some spirited driving in one of our main roads and there was a change in acceleration and the car had power on all gears now. It even did a 5 gear uphill which was impossible to do when you have carbon build up. Gas mileage was unbelievable. I got another liter off my range. it used to be 10l/100km now it became 9km/100km city driving. Also about the CEL it went gone after 50 to 80 km of driving. Final Verdict. 10 out of 10 for how the cleaner worked but if you are scared to do it, I suggest ask a professional mechanic to help you. I still have 1 can left and I will use it after a few years but will take apart the plenum chamber to do a thorough clean. I will not spray it again while the engine is running.