1989 Champion diesel in engine oil

l3cam · 2026-07-10T18:51:36.000Z

Good day everyone, Hope all is well. I have a 1989 Champion grader with a Cummins Black Hodge engine. The old girl is getting diesel into the engine oil. I just did a oil change on it filled it up to the full mark on the dip stick. I used the machine twice for maybe 30 mins and then it sat for a month. I was about to use it yesterday and checked the oil and now its 2 notches above the full mark and the viscosity of the oil is like water. Is there a solenoid valve stuck open after shut down to leak that amount of diesel into the engine? Seals on fuel pump? Thanks for the help fellas

Started by l3camJul 10, 202620 replies

alrmanJunior MemberJul 30, 2026#21
Those pumps are a throw away. You will need to buy a new one.

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