BimmerFest BMW Forum banner

Cute little trick to diagnose blocked CCV system...

424238 Views 91 Replies 39 Participants Last post by  crazy4trains
I just came across this interesting little trick for diagnosing blocked CCV in the Volvo forum:

With the oil cap sealed, engine on, stick a balloon over the dipstick tube and see if it inflates. If it inflates you need to service the PCV system.


I think he meant with the dipstick removed, so the balloon goes over the dipstick housing.

No balloon, no problem, get an old dish washing glove, cut a "finger" off and tie it with rubber band.
1 - 1 of 1 Posts
I used engine degreaser with a little pipette. I tested by blowing into the tubes.
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.