I have oil leaking out of the chain tensioner on my M42. I have replaced the crush washer but there is still a bit of oil dripping out. Is this normal ?
Cheers
M42 chain tensioner oil leak
Moderator: martauto
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Brianmoooore
- E30 Zone Team Member
- Posts: 49353
- Joined: Mon Jan 10, 2005 11:00 pm
I'm fairly sure that BMW never designed an engine that was supposed to leak oil, although they came close with the M20!
I'd be checking for a crack in the threaded boss that the tensioner screws into, although I've never heard of this happening.
I'd be checking for a crack in the threaded boss that the tensioner screws into, although I've never heard of this happening.
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JBentley95
- E30 Zone Newbie
- Posts: 64
- Joined: Tue Jun 23, 2015 11:00 pm
- Location: Southampton
Yes I just found this last night. I think The previous owner didn't put a crush washer in and over tightened the chain tensioner in an attempt to stop the leak... There's a crack where you mentioned ! I'm going to try and use some Belzona molecular metal on it, see how that works.