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International Automotive Technicians Network
Re: Carbon Buildup In Oil Passages
Posted to Technical Discussion Forum on 12/1/2017

Ooh. That's not good.

Don't try to clean it in any manner, shape, or form. You're almost certain to loosen up enough tiny pieces of crud to plug the oil pump suction screen...and it's amazing that it's not plugged already. I've tried every trick in the book ... Login to read more.