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Old 05-17-2014, 12:46 PM   #1
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Angry Secondary oil pump leak

A couple of days ago I noticed my car was leaking a little bit of oil, I then put the car up on the hoist to inspect it. I noticed that the secondary oil pump or commonly known as the scavenge pump was leaking. I then took the o ring off the pump, used some black gasket sealer, reset the o ring then covered it in another layer of the gasket sealer.






Now the interesting part, when I went to put the four 10mm bolts that hold the pump to the cylinder head/valve cover I noticed that the one of the bolts wasn't really getting any tighter. I took it out and saw that it looked like halfway up the bolt the threads had been stretched. So I put a new bolt in and the exact same thing happened. and now the damn thing is still leaking (less then before) however enough to piss me off !

Just wondering if anyone knows of any solutions to this problem or if anyone has had the same thing happen to them.

Thanks for all the help guys!
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Old 05-17-2014, 12:54 PM   #2
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The oil leak was originally coming from that questionable bolt. It was wicking up the threads and leaking from under the heads and appeared to be a pump leak. These pumps simply do not leak; their profile rings seal them up well.

You'll need to restore the threads for that fastener to have any chance at sealing. There are times that a 1/4"-20 SAE bolt can be used in that one position to create a fix for this, BUT thats a hack way of doing it, even though it works well for taking the place of a stripped 6mmX1.0 fastener.

Or you can install a timesert or hell-coil to restore the threads.
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Old 05-17-2014, 01:08 PM   #3
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The only problem with using a timesert or hell-coil to restore the threads is that you are working in a VERY restricted space. Not even sure if I would be able to get anything in there.

I will run over to the parts store and pick it up, for $25 I cant really go wrong lol.. Any other ideas anyone?
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Old 05-17-2014, 01:37 PM   #4
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Most certainly don't want to drill into anything, any other known solutions?
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Old 05-17-2014, 02:37 PM   #5
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Quote:
Originally Posted by LucasGelinstigues View Post
Most certainly don't want to drill into anything, any other known solutions?
I think drilling and using a thread insert is you only real option here........
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Old 05-17-2014, 03:19 PM   #6
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There is next to no room, even with a right angled drill and short bit's i'm not sure it would fit.
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Old 05-17-2014, 05:43 PM   #7
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Originally Posted by LucasGelinstigues View Post
There is next to no room, even with a right angled drill and short bit's i'm not sure it would fit.
Then you need to lower the engine out of the car.
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