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Old 12-04-2012, 11:57 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 24,161
Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by DPP528 View Post
Pull the dipstick while it's running and then put it back in.
Here's a picture of me running a vacuum test (not a leak test, per se), using the dipstick tube.

All you need is a $5 hose and some water:
- How to test the crankcase ventilation (aka CCV, CVV, PCV, CPV, & OSV) pressure regulating valve system (1)

Please read the suggested threads, where the best always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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