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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 05-08-2010, 04:02 PM   #1
RXATE
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oil seeping from filter housing

This started after doing the oil filter housing gasket project...the gasket that goes between the block and the oil filter housing assembly. Now it is leaking from the oil filter cover, as in where you slide the the actual oil filter out.

It seems like I screwed something up and perhaps there is increased oil pressure. Ever hear of this?

Thanks for any help, Mat
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Old 05-08-2010, 04:06 PM   #2
ChasCan
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Could be a bad o-ring on the oil filter housing cap. Or could be a break in the CCV hoses to the valve cover when you did the of housing gasket. Chas.
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Old 05-08-2010, 04:13 PM   #3
oc330cic
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Another possibility is that the oil filter housing itself has cracked. I've heard of this happening when the cap is over torqued.
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Old 05-08-2010, 04:15 PM   #4
ChasCan
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Quote:
Originally Posted by oc330cic View Post
Another possibility is that the oil filter housing itself has cracked. I've heard of this happening when the cap is over torqued.
The cap is plastic. The housing is aluminum. Chances are the cap would crack first. Just my .02. Chas
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Old 05-08-2010, 04:47 PM   #5
oc330cic
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Quote:
Originally Posted by ChasCan View Post
The cap is plastic. The housing is aluminum. Chances are the cap would crack first. Just my .02. Chas
Oops, absolutely right. The cap can crack if overtorqued.
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Old 05-08-2010, 05:18 PM   #6
RXATE
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Appreciate the feedback so far.

I'm going back out to check it over again. It doesn't seem like there would be any way to put this back on incorrectly. The rubber o-ring on the filter cap itself looked ok and I'll check the actual cap for cracking. Appreciate your help -Mat
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Old 05-09-2010, 02:26 AM   #7
RXATE
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got it

Thanks guys. A fresh oil filter o-ring did the trick. I was thrown off because before I replace the oil filter housing gasket attaching the housing to the block the part that houses the filter didn't leak. My guess was that the leak next to the block lowered the pressure in the part that houses the acutal filter...had the gasket on the block been ok, then the oil filter part would have leaked weeks ago. While there was an o-ring there it was more rectangular than a true round o-ring and not as tight as the fresh one. Thanks, Mat
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