APN UIM supplied PCV cap has exposed hole in top.
My previous GM UIM has a sealed cap. I transfered
older cap to new APN UIM...assuming that APN cap
for other engine variations....?
Having a problem using both older(2) o-rings and seating/locking PCV cap.
I don't want to break the d@mn UIM trying to fit both. Seems like problem with
lower PCV o-ring. Left it out and used old o-ring on cap top. I know about problems
this can cause with idle.
Any APN UIM installers ran into this problem?
btw..UP and Running...