How does 14 gallons of diesel end up in oil pan? - Ford Powerstroke Diesel Forum
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Old 01-06-2011, 03:05 PM
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How does 14 gallons of diesel end up in oil pan?

Replacing an engine in my 03 due to 2 cylinders being low on compression. From the time it was last ran (before i bought it) till now when i drained the oil to change the motor (6 months) there was 14 gallons of oil mixed with diesel in the crank case. The engine wouldnt turn over when i bught the truck (bought it as a bad engine) so i would say its hydrolocked from all the extra fuel. The question i have is how could this happen? Thanks

PS, the carfax showed a Ford dealership had looked at it in March which is about when the guy i bought it from said he parked it. They said their case notes showed it had a missfire in cylinder #2 and the #2 glow plug was melted and that the engine as a whole has excessive blowby. The customer refused the repairs so thats all they had on it. The owner said he drove it home from the dealership and parked it and thats all he did until i bought it.

Last edited by DENALI; 01-06-2011 at 03:16 PM.
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Old 01-06-2011, 03:22 PM
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In our diesel tractors, I know of 2 reasons why diesel fuel found its way into the crankcase. First is a leak in the injector pump which, on my tractors, is ran off the camshaft. The second, and more likely, is from a slobbering injector and with a worn cylinder, the fuel doesn't combust but instead leaks down the cyclinder past the rings and then into the crankcase. 14 gallons is a bunch of fuel...didn't realize that the blocks could even hold that much!
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Old 01-06-2011, 03:24 PM
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I'd venture a guess that if the injectors were leaking and those cylinders had that much blowby, the fuel was dripping into the pan passed the rings. Like I said, just a guess.
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Old 01-06-2011, 03:47 PM
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Injectors... I bought 190s from Cass and when he shipped them out, he called and said that one oring could have been left out of my last injector. He said that if I installed it like that, it would fill the crankcase with fuel. So, just sounds like injectors.... btw, he shipped out a replacement before I installed mine and all is well...
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