"Blow off" type noise on shutdown

CMASH

Member
Hey guys! I have a 2.2 out of a 2005 cobalt sedan lt. I just recently got the engine running on my build. However, when i shut down the engine, it sounds like air is quickly being released like blow off. Is this normal?

Thanks!
 

ctuinstra

Goblin Guru
Since it's not boosted , it shouldn't have anything to blow off. Do you have anything connected to your crankcase vent? It's not plugged off or anything?
 
Top