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Old 09-15-2019, 10:06 PM   #1
GK1707
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Default Non stop oil leak

I've got this mystery oil leak from what looks like possibly the oil pump. I've removed the timing cover and did not notice anything nor did my mechanic who did the same.

However there is visible oil dripping from the bottom of the timing cover onto the coolant hose that exits from the water pump. It had coated the oil pan as well as the oil filter and much of underneath.

I couldn't get a recent pic but the hose in mention that gets covered in oil is pictured below (found this photo online)



Just wondering if anyone else had the same oil pump leak and had similiar symptoms. The timing belt and seals look dry when the cover is removed, however it seems damp from underneath.
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Old 09-15-2019, 10:13 PM   #2
02 wrx in mex
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Could it be the oil retainers? Remember those go behind all the plastic from the timing belt cover and it could even go right underneath the valve cover making u think that could be it
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Old 09-15-2019, 10:33 PM   #3
GK1707
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Quote:
Originally Posted by 02 wrx in mex View Post
Could it be the oil retainers? Remember those go behind all the plastic from the timing belt cover and it could even go right underneath the valve cover making u think that could be it
Which oil retainers are you referring to? Im strongly leaning towards the oil pump seal leaking, but I wanted to know if anyone could confirm that they had the same leak
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Old 09-16-2019, 01:25 PM   #4
stu
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It could be the case bolt washer behind oil pump. I had one that slowly leaked from there on to my header. took awhile to figure out where it as coming from.
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Old 09-16-2019, 09:10 PM   #5
GK1707
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Quote:
Originally Posted by stu View Post
It could be the case bolt washer behind oil pump. I had one that slowly leaked from there on to my header. took awhile to figure out where it as coming from.
Thats a good idea, Im going to check again this weekend to see if the oil pooled up any more and see if I can spot the source of the leak from the UV dye.

I've been working with MR Performance here in Long Island to help detect the leak and will def let him know to check the case bolt washer. Chances are I will likely have him reseal the oil pump and oil pan.
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Old 09-17-2019, 01:13 AM   #6
Chris413
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I actually had the exact same leak prior to my rebuild. For me, it was the seal on the AVCS cam sprocket that had hardened over 10 years and started leaking from the front cover plate (which covers the cam bolt). Seems like this isn't common but I pulled the timing cover and looked everywhere several times before I finally tracked it down.
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Old 09-17-2019, 11:34 AM   #7
heiche
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that's a good example of how you usually need to look at the entire oil stain and find the highest and most forward spot, and that's *usually* the source of the leak. It tends to drip/run down (gravity) and back (wind blowing into front of engine compartment).
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Old 09-23-2019, 09:23 PM   #8
GK1707
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I didn't mention before but this has been going on for months and the oil also pools up at the top of the timing cover. I suspected it could be the PS pump and have changed that twice, as it was leaking also.

I've just put a brand new oem PS pump on it and still getting oil pooling on top. But its not the power steering pump that is leaking anymore.

It's not the oil pressure sender either, oil seeps and pools up from the area just on top of the timing cover. Below are some pics I took it shows the oil pooling on top of the cover just under the alternator.

I suspect the oil pump is not sealed correctly. I've put UV dye in the oil and can see where it is pooled up and leaking from but cannot find the source.

The bolt on the top where the timing cover bolts to the oil pump is also cracked but that doesnt seal to the block itself.

Pics:





Underneath where its leaking:



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Old 09-29-2019, 11:59 PM   #9
aowie1
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Have you pulled the timing cover off to investigate? Could be the crank seal
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Old 09-30-2019, 07:49 PM   #10
GK1707
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Quote:
Originally Posted by aowie1 View Post
Have you pulled the timing cover off to investigate? Could be the crank seal

The shop I had taken it to had taken off the timing cover and sent me pics and coundn't find the leak.

I put some UV dye in the oil and going to take it back to MR Performance tomorrow to see if they can track it down.
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Old 09-30-2019, 11:43 PM   #11
awfulwaffle
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Shot in the dark, but how about the driver side AVCS feed banjo, behind the timing cover on that side of the driver side on the block? That would leak down onto the water pump outlet, but definitely wouldn't explain the oil pooled on top near the oil pressure switch.
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Old 10-01-2019, 02:47 PM   #12
Jedi03
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anything leaking further left or right? most likely coming from behind cover otherwise...
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