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Old 12-10-2019, 02:05 PM
StringStalker StringStalker is offline
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Join Date: Nov 2019
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Mein Auto:
PCV test

So Im back to hopefully discuss some more of my issues with this huge knowledge base. TIA for any help.

2012 X5 E70 N55

There are two PCV valves, one in the square spot and one in the big round spot marked electrical hazzard. lol

To test the front one, with the VC off I gently blew into the hole and it checked. I gently drew on the hole and it opened fine and allowed air.

As for the rear one, It has a barb fitting with a vent cap on the top side of the diaphram. It does not draw in smoke, and when i connect my mighty mite vac pump guage to it it shows no vacuum.

I have a ton of vacuum under the VC, but not squealing any seals.

Can someone confirm with my testing methods.


Last edited by StringStalker; 12-10-2019 at 02:06 PM.
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