A couple of weeks ago, I notice that the oil
level was high in my 4-108. Looked to be about 2qts high. There didn't seem to be a diesel
smell per se but the viscosity was poor. I changed the oil
and sent in a sample to be tested. Came back with significant diesel
in the oil and low viscosity.
suggested that it was the lift
pump and that made sense. I ordered a new pump and changed it out myself the other day. Obviously, I also changed the oil. Easy access to the starboard side of the engine
so it was easily completely.
I ran the engine
for about an hour and checked the oil again. This time, it was seriously high and smelled strongly of diesel. Even after an hour the viscosity was nil.
Now during this time, bleeding the system, I noticed an ongoing small diesel leak from the injector pump
. Naturally I thought I didn't snug everything down so I rechecked all the fitting. It still leaks
. Hard to trace but possibly from the throttle area.
So, I have a new lift
pump and a leaky injector pump
and about 2qts of diesel in the engine in an hours worth of running.
My thought is that the injector pump is gone and it's not a bad (new) lift pump. Needless to say, removing and reinstalling the injector pump will not be as simple as the lift pump.