Quote:
Originally Posted by tisdrew
The n54 has 2 PCV valves, I wouldn't necessarily call the system itself normal as there are dedicated always-open ports in the head that will "drain" into the intake runners/relieve the positive crank pressures.
This sticky has pdfs with diagrams and an overview of the PCV system as a whole:
https://www.e90post.com/forums/showthread.php?t=38856 |
I've tried to understand but it always mind fucks me. I'll give a another re-read tonight.