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Guest Message by DevFuse

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Carbon buildup in engine

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1 reply to this topic

#1 fixitguy50


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Posted 08 November 2012 - 12:18 PM

So, I've got my block fully disassembled and found carbon deposits at the base of the cylinder walls, inside the pistons, on the piston skirts & tops and the oil rings were cemented into place with carbon. I had piston slap and some knocking that wasn't going away at idle. The cylinders still have cross-hatches so I'm thinking the collapsed oil rings and clogged oil holes in the piston skirts and carbon deposits on the skirts may have caused the slap. Am I deluded ? What do I need to check ? The main and rod bearings are worn and have some scrapping from dirt or carbon. What should I check ?

#2 davebugs


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Posted 08 November 2012 - 01:32 PM


I'd likely say bearings and rings.

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