Case Cummins has fuel in oil

Butch(OH) · Mar 6, 2018

Hi all. I own a W11B Case loader with the
4bCummins engine. It is getting fuel in the
oil. We replaced the lift pump and it
didn't change. Is there any other
possibilities besides the injection pump?
Recently a new problem has surfaced where it
will start, then die and you have to crank
on it for 15 seconds for it to start again
whereAfter it runs fine utill you shut It
off for more than a few minutes.

MSM · Mar 6, 2018

Injection pump is leaking. Most likely the shaft seal leaking into the timing cover. It is losing it's prime from the leak and you have to crank it for a long time to build up fuel pressure again then it starts.

Dieseltech · Mar 6, 2018

I'll second the injection pump. Both the Bosch VE or the CAV/Lucas/Delphi DPA pumps over time can have front drive seal failures. Best in the long run to reseal the complete pump. If it's the VE with high hours plunger return springs should be replaced too..

Butch(OH) · Mar 6, 2018

It's a Lucas. We pulled the small cover off where you aces the nut on the gear and it is soaked with diesel fuel. Thanks guys

Case Cummins has fuel in oil

Butch(OH)

Well-known Member

MSM

Well-known Member

Dieseltech

Well-known Member

Butch(OH)

Well-known Member

Similar threads