Positive Crankcase Pressure Problem-HELP PLEASE - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

thetopcow · 05-17-2009, 08:52 PM

Ok looking for your help. My dipstick is popping out and spewing oil, which should mean positive crankcase pressure, correct?

I did a compression check and got the following numbers:
1-157psi 2-160psi 3-160psi 4-155psi

I have read it could be bad rings, but wouldn't my compression be lower?

I have a brand new pcv valve.

My catch can is hooked to the left side of the "T" and then routed back to the intake after the MAF. The right side comes out of the "T" and back into the block. My catch can has really small holes, could this be causing a restriction and thus causing my problem?

I know this has been covered, but I found no completed threads with the information I am looking for.

05-17-2009, 08:52 PM	#1
thetopcow Zilvia Member Join Date: Sep 2005 Location: Bartlesville, OK Posts: 227 Trader Rating: (5) Feedback Score: 5 reviews	Positive Crankcase Pressure Problem-HELP PLEASE Ok looking for your help. My dipstick is popping out and spewing oil, which should mean positive crankcase pressure, correct? I did a compression check and got the following numbers: 1-157psi 2-160psi 3-160psi 4-155psi I have read it could be bad rings, but wouldn't my compression be lower? I have a brand new pcv valve. My catch can is hooked to the left side of the "T" and then routed back to the intake after the MAF. The right side comes out of the "T" and back into the block. My catch can has really small holes, could this be causing a restriction and thus causing my problem? I know this has been covered, but I found no completed threads with the information I am looking for.