R56 vacuum in crankcase

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Dec 15, 2021 | 05:07 PM

DJewell

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2nd Gear

Joined: Jun 2020

Posts: 71

Likes: 13

From: Defiance Ohio

vacuum in crankcase

I have a 2008 mini cooper S. N14 I have vacuum in the crankcase. I am thinking PVC valve. Is there something else I should look at?
Thanks for any help

Dec 16, 2021 | 03:48 AM

njaremka

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Joined: Jul 2016

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From: WNY

You actually want vacuum in the crankcase, as it helps the piston rings seal better. What you DON’T want is boost in the crankcase!

Dec 16, 2021 | 05:22 PM

DJewell

Thread Starter

2nd Gear

Joined: Jun 2020

Posts: 71

Likes: 13

From: Defiance Ohio

This is so much vacuum that it's hard to get the oil cap off. Never seen this much vacuum.

Dec 17, 2021 | 03:35 AM

njaremka

Alliance Member

Joined: Jul 2016

Posts: 7,472

Likes: 2,468

From: WNY

If “that” much vacuum, yeah, I would suspect PCV valve too

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