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      06-27-2013, 06:20 AM   #1
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Engine Decarbonization

Has anyone done it? How?
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      06-27-2013, 06:21 AM   #2
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Turbo DI cars would need this periodically
But not the S65 if you're running V Power et al
V8 M3 in the barn

E46 330i 2002: DD; Z4M 2006- sold; E39 530i 2001- sold; E36 325iC 1994- sold
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      07-05-2013, 09:13 PM   #3
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Originally Posted by 330indy View Post
Turbo DI cars would need this periodically
But not the S65 if you're running V Power et al
The S65 injectors spray fuel right over the valves cleaning them in the process.
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      07-07-2013, 02:38 AM   #4

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Does not necessarily mean mean you cannot get carbon build up in the cylinders. DI engines have carbon in the valve areas but any engine gets carbon build up overtime if a few things are not done. First any decent fuel nowadays has sufficient detergents. Bottle of concentrated techron every oil change. And most importantly is driving the car hard regularly and not many short trips where you do not push the car. Every week atleast once should include a nice open freeway run for 15 minutes with multiple WOT runs. This really prevents the process of carbon forming.

Also one thing that is not preventable is if your car tends to burn a lot of oil as the oil in the cylinders will lead to carbon deposits. Again much worse if you do not really get on the gas often to burn them off.

But overall it is WAY better than DI engines which are a nightmare
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      07-10-2013, 09:16 PM   #5

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I clean mine with high revs. Can't build up if it's not in the engine long enough!
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