is it possible to clean up carbon deposit on the cylinder and valves without taking off the engine head?

Answer 1

yes its called Sea Foam or a mixture of water and transmission fluid works the same but if you use the water and trans fluid mixture do not let the car die, this isnt something an average joe should try

Answer 2

wewll there shouldn't be any carbon on the cylinders and if there is there is a big problem but hte valves might have some and infortunatly the only way to take it off is to take the head off, take the valves out, and use a wire wheel to clean the deposits of

Answer 3

Back in the days... when cars were carbureted, people used to SPRAY water into the throat of the throttle body (using spray bottle) - don't pour. That would create "steam cleaning" of the cylinders. Of course this is all during the engine is running (and mildly revved). But you need more than just a squirt or two.

Before the days of knock sensors, hot rodders would actually mount an air injector (for high compression). Then they found the extra benefit of "steam cleaning".

Good Luck

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Answer 4

Yes. The Motor Vac system does this the best. Only available at upper quality shops. The machine cost over $1,000 is why.
Other chemicals are available but do not do a good job.
Old school said to poor water down the intake while running until it almost dies. Do it several times and it will knock it loose. Not to much or you damage the engine.

Answer 5

personally i have never heard of this ea foam crap and i work in auto repair for 14 years. if you want to get rid of carbon. you can do an air induction cleaning. they do it at most shops for about 80 bucks. they will run a pressuized cleaner throught he throttle body and itwill break up the carbon in t-body, intake , and intake valves on the cylinder head. this carbon will restrict air flow and can cause a car to run like crap at idle and also decrease your fuel mileage.

good luck

Answer 6

Try "Sea Foam" it works great and is a lot of fun, too... You can get it in any auto parts store. look for a white/ red can...