JD 317 fuel in oil

[teemdoc]

I suddenly lost 2/3 a tank of fuel, engine died. Couldnt restart. Added more diesel, and manually primed.. couldnt find leak. Looked at dipstick, saw fuel. Drained oil: a lot of diesel fuel. Ideas? thanks.

 

[OldMachinist]

Don't know about the Deere engine but on most diesel engines when this happens it's the fuel lift pump that's leaking into the crankcase.

 

[teemdoc]

Don't know about the Deere engine but on most diesel engines when this happens it's the fuel lift pump that's leaking into the crankcase.

we replaced that, pumped on the sump...still pouring diesel into crank case. Did that today.

 

[Bobcatdan]

we replaced that, pumped on the sump...still pouring diesel into crank case. Did that today.

If you listen closely, you have a dead miss. One of the unit injector pumps locked up. The cam forced it up and broke its clamp. Fuel runs threw bores in the block. Call the dealer. It is very exacting to time the pumps after repair or it will not run right. Hopefully your lucky and the bore in the block didn't get damaged, or the block is junk.