vanos o-ring question

Seaneezy

Corporal
Mar 12, 2018
133
34
0
Ride
e90 LCI 335i
had to clean and swap my vanos solenoids to chase a code. When reinstalling I understand you should be hearing a pop sound when you insert them. I don't hear this and mine go in with linear resistance. When I pull the solenoid back out, the o-ring is not on the indented part of the solenoid. I thought maybe you need to push the top seal against the o-ring during installation but no matter what way I install these, the o-ring never pops and will never sit on the indented part. Does this matter? I am applying the o-ring on the solenoid before installation, not in the cylinder head gap, which I understand some people mistakenly do. I have aftermarket oil cooler lines that I disconnected to be able to insert them as straight as possible as well.
 

nyt

Sergeant
Sep 15, 2019
331
1
289
0
Ride
2010 335xi
The ring does not sit on the indented part. It sits against the spacer.

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