Berryman Products 2611 Intake Valve and Combustion Chamber Cleaner, 16-Ounce Aerosol

Instruction for use are perfect. Liked that I did not have to run the engine above idle speed to use this cleaner. Keep the spray can upright. Engine did not stall while using. After the post use waiting period my truck started right up. It ran a little rough and the check engine light came on. Do not panic cause it clears soon. My cruise control would not set nor would the AFM work on the 5.3L V8 during the post application drive. Again, do not panic. It all worked the next time I drove it. Will use again.

This product is freakin amazing. Ignore the negative reviews, those are people who have no clue. I ran one can through my 2012 Jeep Liberty V6 that was getting 12-16MPG and had poor pedal response and no acceleration. I had put plugs and wires, air filter because we just bought it for my daughter and it had 118k miles on it. We took compression test and it was fine. Narrowed it down to possible carbon buildup. Well CARBON BUILDUP INDEED! This thing smoked during the entire can during idle and almost none when driving. Immediate increase in acceleration. Fuel mileage restored to 15-19MPG, which for 118k miles is good enough! I felt the car had more to give so today (a week after the first can) I ran a second can through. This time it did not smoke during idle, but on the road test it burped quite a bit of smoke and the check engine lite came on and went off. no big deal. I was right, she did have more to give! I got MORE acceleration the 2nd time! At the time of writing this, I did not have the mileage into it to retest the MPG, but I will this weekend. I suspect 16-20MPG now. FREAKIN AMAZING STUFF for under $40! NO brainer! I also ran a can through my son's 2014 Chevy Sonic 4cyl (68k miles) and it did not smoke at idle. During the road test, It was sputtering badly to the point I had to use manual shift to rev up the RPM's. Check engine lite blinking. I stopped, let the engine recover and pulled out onto the main road. It started to accelerate and then almost died. I lost all power momentarily. Then this Hiroshima cloud came out the tailpipe, HOLY CRAP WAS THAT A MASSIVE DENSE CLOUD! Afte that, it cleared up and once again, we got the same results, much better acceleration and a 2.4MPG increase, it now gets 29MPG city! (prior was 26.6MPG). I ordered 2 more cans to run through my 2012 Silverado with 788K and my wife's 2017 wrangler with 50k. These cans are worth the investment, you immediately get it back and then some in recaptured MPG, let alone the better performance factor.

Probably one of the best cleaners I have used. I get this multiple times throughout the year for my fleet. Easy to use and actually works well.

I would have given this five stars except that there was a leak in the clear plastic hose where it was kinked rather than being gently folded over itself. It wasn't a big deal -- I just cut the hose at the leak and re-attached the fitting -- but it could have been had it gotten into my eyes. In fairness, I should mention that I've never had this happen before. But it was concerning enough that I thought I should mention it, along with a warning to inspect the holes before pressurizing it and immediately upon pressurizing it. If there's a leak, then shut off the valve. The solvent is very strong and could do some damage to an eye. That singular flaw aside, this cleaner works as well as any other I've used. I use it to keep carbon buildup to a minimum on the intake valves and in the combustion chamber of my car's GDI engine. Because the fuel never actually touches the faces of the valves in a GDI engine, you don't get any "fuel wash" effect of the valves; so using a product like this periodically is essential maintenance. It also helps remove carbon buildup around the rings; but the valves are the main targets for products like this. What I like about this particular product is that it can be used without a helper. It's formulated to work with the car running at normal idle speed; it comes with fittings to attach the hose to the engine so you don't have to hold it in place; and the can has a total-release valve that you just have to press down once. The chemical keeps flowing into the intake until the can is empty. In other words, once you attach the hose to the car and depress the actuator, all you have to do is watch it so you can shut down the engine when it's empty. You don't have to hold anything in place or keep holding the actuator down while a helper in the car keeps the RPM's up. You just start the flow and monitor it. I also suspect that the sustained, slow flow does a better job of cleaning than a shorter application. I have no proof of that, however. It just seems sensible that a longer exposure time would work better. If you start using this product when your car is new, you have a good chance of never needing a more-expensive mechanical cleaning or walnut shell cleaning of the valves because you won't give the deposits a chance to build up to the point that they affect performance. If you wait until the deposits are heavy, then this cleaner is still worth trying; but the heavier the deposits, the harder it is for a chemical cleaning to remove them. Better to start early.

2013 Mini Cooper S. Had a P0303. Already put in new plugs and coils. Ran additive in tank, with no change. Thought maybe it was fuel system, an might need to swap injectors. Bit more research and saw these cars are horrible with carbon build. Decided to give it a try. Throttle body is under intake on backside of engine, so had to inject the stuff a little further upstream. Didn't change idle at all, and no smoke while can was connected. But after sitting ~20 minutes, car smoked bad. Drove it until it cleared. Then drove it hard to try to get misfire again, nothing. Drove more to get it to try, nothing. Accelerated smoother, and so far so good. Haven't driven enough to see if mpg has changed.

Fast shipping from the friendly seller. Easy to use with the several adapters they send with the can. Rather effective product, cleaning out a good bit of carbon cleanup on my 2015 GTI. Obviously didn't polish everything like a intake valve blasting service would but it's not meant to do that, only be a nice preventative and economic cleaner. If using on VAG vehicles expect there to be a decent amount of smoke coming from the exhaust while in use and the first 10 minutes of driving around, that is perfectly fine.

5 stars for ease of use and the included attachments. This is the way to go unless you have a helper. Took the intake hose off on both ends (from throttle body and airbox) so I could make sure the yellow hook attachment was seated properly and pointed to the center of the throttlebody. Didnt have any pooling issues or leaks. Started up right away and drove around my neighborhood and kept it at the speed limit. Yes it costs more than CRC but then again its set and forget unless your car stalls or something. I got the can going and cleaned my windows. Just easier and faster. Im starting this on a one year old car and planning on using it every year.

**** EDIT**** I commute, put on lots of miles so use this product almost every year. Following instructions and prior experience, it took over 30 mins to empty can. Car didn't smoke or struggle like the last time. After waiting 30 mins post administration and doing the 10 min drive, again, no smoke or chugging like it did every other time I used this. Either its a new formula or the can wasn't delivering the product fast enough to be effective. Disappointing considering the cost compared to other options. ***** EDIT***** 2015 Subaru 110k miles. Bought for preventative maintenance and noticed decreased MPG. Wasn’t expecting much noticeable difference but definitely smoothed out idle and quickened throttle response.. Easy to install kit and easy to follow instructions. Took only a few mins to set up and break down. No lights or issues during the service. Waited 30 mins after the service then did 10 min ride as instructions stated. Had a little rough idle and acceleration With lots of smoke that cleared up in about 2 mins of driving. Ran great after that. With price of gas now days and what a shop would charge for a fuel system clean, this is a bargain. Curious to see how and if it affects mileage. Definitely suggest

Très facile à utiliser et très efficace je le recommande fortement

Facile d'utilisation et semble avoir un effet positif. Par contre, je n'ai pu le valider car je n'ai pas de caméra pour vérifier le résultat avant/après. J'aime le fait de pouvoir l'utiliser seul, et je recommande de faire une vidange d'huile après ce traitement pour éviter de contaminer les composantes avec le carbone qui se dissout dans l'huile et les gaz d'échappement.

Dose the job

Facile d’utilisation

Did a great job cleaning my intake and valve system