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      06-26-2013, 08:13 AM   #36
F32Fleet
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Drives: 2015 435i
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Quote:
Originally Posted by Hoooper View Post
actually leaking injectors could cause excessive carbon and when the EGR opened that excessive carbon (soot) would end up going through the intake, but soot alone shouldnt stick to the walls of the intake (and I dont think it does). Remember, leaking injectors wouldnt have any liquid come in contact with the buildup before it is burnt because of direct injection. Even if it did it might not help, not sure, but since diesel is oil and the sludge in our manifold is very oily it might just add to it.
Just to clarify. Carbon build up in the intake is a mixture of motor oil and soot. Carbon buildup in the head is the result of excessive idling and low load conditions.
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