Join Date: Dec 2003
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Perkins 4-108 with fuel in crankcase
Has anyone had this problem? I recently did an engine oil change and took out much more fluid than the was put in on the last oil change. After looking closely at the oil, it was less viscous than oil should be and it smelled like diesel fuel. I could not find how it got into the crankcase. So I put in new oil, did a short engine run and the oil pressure looked good, 45 psi. The following week I pulled the dip stick only to find that it had more fluid/oil in it than when I had changed it the week before and it smelled of diesel. The oil seems to be able to get in the crankcase even when the engine is not running. Is it the low pressure mechanical fuel pump, or the high pressure pump, or something else?