Time for an update.
It has been way to cold to be outside working on this thing. Even though my time is running out to get it done. It has warmed up a bit this weekend so I am trying to get something done.
As I mentioned I got a bad oil leak out of the back side of the turbo. The motor has 25000 miles on it and is a 1988. I figured the seal just went out in the hot side.
Fast forward to today.
I pulled the turbo off to rebuild it. After removing the turbo I notice the input is wet as is the exhaust manifold.
I then wondered if a valve guide went bad so I removed the nuts holding on the manifold to see if it was one cylinder was the culprit. After sliding it back on the studs I find every one, was wet.
I find it hard to believe all the valve guides took a dump on every hole at once. They could have been going bad one by one over time. The intake is clean and dry. Which leaves the injectors and pump. The puddle under the bus looks like diesel oil. I smelled the fluid in the ports but I can not tell if it is more one then the other.
The bus has always smoked when idling and I figured I just needed to adjust the smoke wheel on the pump but have never gotten around to it. Now I am not sure that is the issue.
The fuel does have a bit of new motor oil mixed into it that I added recently (cheap store brand stuff that came with a car I bought). I am not sure that really has anything to do with this problem but I added it anyway. It ran before and I never had this leak.
I have not pulled the valve cover at this point.
Anyone have any ideas what might be causing this issue.
The more I think about this it is either the valve guide seals or it is mainly running off the oil I dumped into the tank not long ago. The motor has mostly been idled lately, not been pushed hard, nor heated up much. I am thinking the oil, cold temperatures, and the smoke screw out of adjustment is making it not burn the motor oil it is sucking up completely.
I think I will throw it back together tomorrow, dump some more diesel into it, and adjust the smoke screw. I will see if that clears it up any unless anyone comes up with a better idea. The valve guides might still need replaced.