diesel leaking down into oil pan

Anonymous-0

Well-known Member
My IH 400D leaked all the diesel out of the tank into the oil pan.
It had been setting for about 2 MO and when I checked all the
fluids they were good. Run the tractor for about two hr. it run
great.
Went to start it today and the oil was way over full, I could till it
had diesel in it. When I checked the diesel tank it was empty.
I know this tractor has a lift pump on the back of the injector
pump. Could that be the problem? The oil in the injection pump
was full of diesel also.
I think this happened when the tractor was not running, would
that make any difference?
Does anyone know what else might cause this and how hard and
costly is it to fix?
Thanks for any feed back.
 
It's easy to fix. I got my lift pump rebuilt for $100, but that was 6 years ago. There are a few other gaskets in there that you might need.
 
Mechanics say it's the front seal on the inj. pump. Our 450D has this problem. We just turn the fuel off when not being used. Severe cases probably might leak during running. Ours doesn't.
 

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