Diesel Blow By or ???

[EddieWalker]

Plumboy,

They could be bad, but it was just rebuilt. TWICE!!! Either I'm missing something, or those guys didn't do a very good job and my problems are all still in the turbo.

Jerry,

The website listed all sorts of things. But they are kind of general and there's nothing new there. I'm still at a loss how the oil could be coming through the intake manifold and into the turbo agains the air flow.

Does the turbo create enough air preasure to keep the oil from traveling against it????

Eddie

 

[Nasty135]

Eddie, I wonder if a possible cause could be from an unseen crack in the housing of the turbo bearings compounded by excessive blow by...giving you your leak.??

If that isn't a probability then here are the results of a search that may give some help:
TURBO PROBLEMS

Turbo problems: Inspection - A faulty turbo can cause low power, black smoke, excessive oil consumption, oil in the intake, oil in the exhaust as well as other problems. To determine if the turbo is the problem an inspection of the shaft assembly can be made. Remove the intake and/or exhaust plumbing to the turbo. Look for any evidence that the wheel has toughed or rubbed the housing. If no signs are evident physically push the wheel to one side and see if the wheel can be made to contact the housing. If either of these conditions exist the turbo should be repaired or replaced. If the shaft is tight and wheels have not rubbed other checks should be made before replacing the turbo.


Turbo problems: Oil leaks - Before replacing a leaking turbo several checks should be made. The oil drain out of the turbo should be checked for any restriction. A buildup of crankcase pressure caused by a bad PCV valve or excessive blow-by can also cause the turbo to leak oil. Oil leaking on the intake side of the turbo is strong evidence of an air restriction. If the air cleaners are working properly, inspect the intake hoses for soft spots, they may be collapsing. This could also cause occasional black smoke and low power.

If an engine is idled for an extended period of time it is not unusual for the turbo to leak a little oil. This leak should go away once the engine is loaded up and boost is generated.

Good Luck

 

[EddieWalker]

Thanks Nasty,

We've been looking at the same websites!! /forums/images/graemlins/grin.gif

I put new filters in and the hoses are solid. There realy isn't a PCV valve, but just a 90 degree angle fitting in the top of the valve cover that goes to a hose that's open to the bottom. It's totally clear.

The last time I ran it, I did notice that after awhile, oil was leaking from around this fitting and the more it leaks, the more smoke I get.

I did come across a new term though.

Slobbering.

This might just be what I have in the turbo line from the turbo to the intake manifold. Apparently this is very common and not something to worry about.

I still haven't found any other vents and I'm wondering if that's a problem too. The crank vent could be a problem, but none of my manuels list there being one and I don't recognize it if I have one either. /forums/images/graemlins/confused.gif

Thanks,
Eddie