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Feb 25, 2011 | 07:39 PM

amerkinsquid

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From: Del Rio Tx.

Blow By

I am having trouble with a blowby problem. How can I rectuify the situation and relieve the blowby wothout having to spend a great deal of money? I already have spent over $3500 to replace the injectors and cleaning of the oil pumpand manifold screens So I don't want to spend too much more on it.

Feb 25, 2011 | 07:49 PM

High Binder

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Quote:

Originally Posted by amerkinsquid

What makes you think you're getting "blowby?" Assuming you're talking about piston ring blow-by... You really need a leak-down test to check for blow-by. It's usually a ring problem but that's hard to swallow that that is your problem. Rings typically last a hell of a lot longer on diesels because the cylinder wall isn't getting washed like it would be in a gas engine.

Feb 25, 2011 | 08:24 PM

ljutic ss

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From: Green Lane, Pa.

Quote:

Originally Posted by High Binder

There is a gauge that they use to check crankcase pressure that goes on the oil filler tube.

Feb 25, 2011 | 08:28 PM

bismic

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Quote:

Originally Posted by ljutic ss

There is a gauge that they use to check crankcase pressure that goes on the oil filler tube.

Yup, and you can rig up your own that connects to the dip-stick tube. Max pressure is 0.3 psig, so you will need a pressure/vacuum gauge (a cheap one will work OK, but a magnahelic is WAY better).

Hopefully the OP is just seeing some oil in the Turbo inlet tube - which is normal.

Feb 25, 2011 | 08:29 PM

High Binder

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Quote:

Originally Posted by ljutic ss

There is a gauge that they use to check crankcase pressure that goes on the oil filler tube.

Would you then seal the PCV tube off before the test? How would you figure out which individual cylinder is suspect (maybe manually turning the engine over to cycle the valves)?