CRC Marine Engine Tune-Up and Decarbonizer (13-Ounce)

I sprayed some of this on intake valves and let it sit for several days. It’s seem to eat up the carbon buildup pretty good. I haven’t used it for anything else though.

This stuff worked great! Follow the directions and you're golden. My '84 Corvette failed emissions, even after trying to de-carbonize buy beating on it up and down the highway (blowing out the catalytic converter). You might need a gas mask when you use this product because the exhaust was near toxic while administering the product following the directions, even with the garage door open, but most importantly it worked! I got he lowest hydrocarbon reading I've ever gotten the car and I've had it for 20 years. Will by again. Thanks!

Engine ran like new after using this product. Would recommend to anyone with older outboard motor.

It's ok...I like CRC products but their intake valve cleaner seems stronger than this solution. This decarbonizer did improve things, just not as quickly as I wanted (may need 2-3 applications).

It is exactly what I wanted and it was shipped very quickly. No problems with the order at all, will do buisness with again.

Item arrived as expected. Thanks!

great stuff

This product it's not a carb cleaner, it's intended to clean carbon build ups on piston, piston rings and combustion chambers specially on 2 stroke motors. An effective application way is to drill a small orifice on the carb's air silencer, once the motor has been fully warmed up spray small dosis one at a time through each carb's throats, product will smoke a lot while cleaning and burning which is normal. Once the short or long decarboning process ends must run the motor full throttle as if stealing the application for the product to burn and clear out any product remains.. Must be applied at each 100 run hours intervals to keep the motor running top, it's gold canned highly recmmended product