What could cause too much crank case pressure in a 7.3 diesel? [Archive]

View Full Version : What could cause too much crank case pressure in a 7.3 diesel?

rayhunts

Sep 23, 2011, 10:26 AM

I have too much blow-by coming out of filler neck. But when you hold the RPM's around 2000, the blow by goes away and there's no pressure out of filler neck tube.

Any ideas?

chaosmaster1

Sep 23, 2011, 09:40 PM

Maybe it's a clogged pcv valve?