Diesel fuel in crankcase 1066

BOBM25 · Sep 16, 2013

Pulled the dipstick on the 1066 and it has way too much oil. Oil is also extremely thin. Black like oil, but very thin. Tractor has been sitting a while, probably a couple months. It ran fine last time, didn't notice anything strange. Is it possible for diesel to leak into the crankcase through the injection pump while the tractor sat? I'm just thinking in order for the piston rings to let that much fuel through, there would no compression in that cylinder and it would have ran very rough.

Dieseltech · Sep 16, 2013

Yes, fuel can leak over time past failing head lower seal, control unit O ring too. Gear pump seal can leak also.

Seeing Red · Sep 16, 2013

Had the identical problem on a 966. Injection pump R&R with a rebuilt pump took care of that problem very quickly. That and an oil and filter change, you'll be good to go.

Diesel fuel in crankcase 1066

BOBM25

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Dieseltech

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Seeing Red

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