Thread: What did you do to / for your E53 today??
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Old 08-03-2020, 12:06 AM
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Quote:
Originally Posted by PalmSpringsE534.6 View Post
That's what I'm wondering about. I changed the tensioner as it was prudent but now I'm thinking I have the oil draining down to the sump. That would mean what?



1. Bad check valve in the head

2. Bad/stuck valve in the oil filter housing

3. Bad Vanos seals



Can anyone give me some troubleshooting advice on this one?
Im leaning toward the oil filter housing...
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