FUEL IN OIL ?

[robertc68]

Basically I am brainstorming and I have a few questions about diesel fuel making oil level higher.Is it possible a tuned 58 volt ficm could cause fuel to get in the oil.Also could different tunes cause it? My injectors have been rebuilt and I did compression bubble test with no bubbles in the fuel filter housing,which makes me think the injector orings are not leaking.I guess it could be and injector sticking etc....The heads have had all exhaust seats replaced,and the supposidly he checked to make sure they were not cracked,but could the intake seats be cracked,letting fuel in.

Thetruck runs fine no smoking,but if the orings are not leaking and if the injectors are not sticking,what else could be wrong(something electrical /mechanical).Doing a search on here it seems like a lot of 03/04 have had this issue more then the 05's and up anyway.
Any help would be apprecaited.thanks,Robert

[dannyboy950]

The miost probable cause is a injector tip blown off/damaged or a pintel stuck open.
Since this is downsteam of the injector body seals it won't show up in the bubble test.

This can be tested by removeing the glow plugs and rolling the engine over and observe which ones spit out fuel. The raw fuel sitting on top the piston will leak by the rings since fuel is thinner than oil and will drain into the pan.

[Nally7.3Powerstroke]

Would have to agree with ^. I would think though if the injector was sticking open it would smoke more then usual.

[robertc68]

Originally Posted by dannyboy950

The miost probable cause is a injector tip blown off/damaged or a pintel stuck open.
Since this is downsteam of the injector body seals it won't show up in the bubble test.

This can be tested by removeing the glow plugs and rolling the engine over and observe which ones spit out fuel. The raw fuel sitting on top the piston will leak by the rings since fuel is thinner than oil and will drain into the pan.

So even if my injectors were rebuilt this could have happened? Even so it would still point to the injectors?