Quote:
Originally Posted by maswastage
Are modern common rail direct injection diesels susceptible to carbon buildup like gasoline DI engines are? I was told that the properties of diesel fuel make diesel engines immune to this problem, but I'm wondering if maybe I have the wrong information.
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It has nothing to do with the diesel quality. The surmise is that the EGR (Exhaust Gas Recirculation) system causes the problem by putting exhaust gases that contain "junk" into the intake runners.