[DML] Re: Carbon deposits in combustion chamber

[nicholden@xxxxxxxxx]

Subaru does an excellent top end cleaner which is designed for just 
this purpose and is cat convertor safe. I used to work in a large 
multi car dealership where all the different brands of cars would 
actually recommend this cleaner (via subaru) for carbon build up in 
the manifolds/valve backs/throttle body etc. I recall an car once 
that had a constant idle stutter that couldnt be fixed, the only 
thing left was to remove the heads and de-carbon and inspect them. 
Firstly the cleaner was applied through the injector holes over a 
few hours which fixed the problem. Be aware the cleaner is ment to 
be burnt by the engine and as it disolves the carbon and should not 
really be left untill it has dried up but rather burnt by the 
engine. The car will be very hard to start and once it does will 
cause huge clouds of smaoke. The cleaner here in Australia is 
called 'Subaru upper engine cleaner' and comes in a small aerosol 
can not sure if it is available or called the same in the states. 

Good luck 
Nick #10927




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