Oil in BOV

[Damo]

I pulled off my stock BOV today and found an oily residue on the inside of the BOV and the pipe that vents back into the air intake (The wider pipe of the 2 that comes off the BOV, not the thin one that goes to the intake manifold).

What could be causing this?

Is it normal?

Damo

[C_DawG]

Sounds like some blow-by. If its serious it can be an indication of shot rings.

[BIGBLOCKR31COUPE]

Normal. Yes. It is coming from your PCV valve. The harder you drive the more oil. An oil catch can will prevent this.

[VIPERGTSR01]

oil residue is fine, if there is alot of oil then that could be a problem

[Damo]

Thanks guys,

What is the PCV valve btw?

[SLY33]

its a valve on your cam cover that lets pressure out (usually containing some oil vapours)- normally it connects back to the inlet, but a catch can fixes this.

PCV stands for Positive Crankcase Ventilation.