Making oil.... where to start looking?

[CanonNinja]

Noticed this weekend working on the truck that I had a good amount of diesel in the oil. Did a quick change, but need some tips where to start looking for bad seals on the injection pump or what I need to start rebuilding next week. There's no FDC on my truck, it's completely removed by the depot during rebuild. Kenny?

 

[emmado22]

Check the manifold heater... They like to leak into the oil....

 

[CanonNinja]

never thought about that... mine's never worked as far as I know (switch doesn't do anything)


all I know is thank God I've been running filtered engine oil/WVO and diesel mix, the oil that came out of the pan was still somewhat lubricating

 

[emmado22]

If it doesnt work, take it off. One less "leak point"

 

[truckdoctor]

Hey on the subject of diesel getting in the engine oil, make sure that you don't have a cylinder with a broken piston ring or a hole in the piston. I helped on a deuce yesterday that had a piston with a hole in it and the diesel was coming from the injector spraying fuel through the hole. Also check your transfer pump along with your injection pump because transfer pumps can start leaking internally. Hope that helps.

 

[m-35tom]

the most likely and usual leak point is the lower ip head 'o' ring

 

[cranetruck]

This subject has been covered several times before, do a search on this site...
The flame heater may leak fuel into the intake manifold adapter, don't know about the crankcase.

 

[emmado22]

Opps, my bad... Thought it was the intake manifold..... Im a moron.

 

[CanonNinja]

This subject has been covered several times before, do a search on this site...
The flame heater may leak fuel into the intake manifold adapter, don't know about the crankcase.

did, didn't come with much, maybe I was searching the wrong keywords

Talked to Kenny today, thinks I'm probably looking at a full IP rebuild, which isn't cheap

 

[CanonNinja]

Hey on the subject of diesel getting in the engine oil, make sure that you don't have a cylinder with a broken piston ring or a hole in the piston. I helped on a deuce yesterday that had a piston with a hole in it and the diesel was coming from the injector spraying fuel through the hole. Also check your transfer pump along with your injection pump because transfer pumps can start leaking internally. Hope that helps.

doubt that's the case, atleast I hope so... truck runs very smoothly, lots of power, not much, if any smoke



could I have caused a backup in the pump somewhere running WVO that wasn't filtered enough perhaps?

 

[m-35tom]

the worst thing regarding the ip would be having to replace the 2 'o' rings under the ip head, not very hard to do. to check for leaking lower 'o' ring you need to remove and plug the overflow valve port and pressurize the supply port to 60 psi. do this with the shutoff lever cover off, and any fuel leaking will come out there.

 

[rdixiemiller]

Mine is making oil too. I already bypassed the FDC, didn't help. It runs strong and smooth, so I am leaning towards the hydraulic head o-rings myself.

 

[cranetruck]

There is a drain port on the injection pump, you may want to open it and sample the oil from the IP before doing anything else.
The unit on my work bench takes a 5/16 Allen wrench.

 

[m-35tom]

if you are thinging of the six allen screws, they are access ports for internal passages and are not drains

 

[cranetruck]

I'm referring to this drain port, I have used it.

 

[m-35tom]

ah, the engine oil drain(?) for the govenor housing. i would think it would have the same oil as the engine, from wence it came??

 

[cranetruck]

Based on the oil flow diagram in the TM, this is the original drain for the IP, so my guess is that the concentration of fuel in the oil would be higher here than in the crankcase, at least that was my point.