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Old 06-17-2013, 09:16 AM   #5
Studly Adventurer
Joined: Nov 2007
Location: So Cal
Oddometer: 733
we may be onto something here...

I did notice that once the cover had contacted the o-ring the bolts took several complete turns, and felt "mushy" to me. I thought I had very carefully selected the correct of the two o-rings, but I too had them both in the same bag with no markings.

Trying to find the oil pump cover o-ring specs:

11 22 1 337 099 - 59X3MM fly wheel
11 41 1 335 895 - ??X?MM oil pump cover

I'll add this to my list of theories, but I'm almost sure this is going to be my problem. I just hope I did no damage the engine by riding it when I should not have


Originally Posted by chollo9 View Post
Yes, the flywheel o-ring is very close and easy to mix-up. I installed the wrong one this past winter and luckily could tell it wasn't right when I was tightening the screws--too mushy!. MAX sent the two o-rings in one baggie with no markings and I chose incorrectly.

If this is your problem, there would be extra side clearance on the pump rotor and low pressure.
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