I finally got some time, and found the problem. The spin on adaptor was leaking at the top, and running down and dripping onto the pan rail. Just enough so I couldn't find the leak on the block itself. With the adaptor off there was a small burr on the mating surface, which may have contributed to it. That's polished out now. I had to pull the header to get in there, and there was some sign of leakage on them, so I'm having them resurfaced. Hopefully, it goes back together this weekend. Thanks for all the suggestions.


miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

If you have a gerotor pump, then you can use the kit to rebuild as long as your housing is in good shape.

You can use that complete pump to replace either a gerotor or spur gear pump.


Lawrenceville, GA

Can anyone tell me if I can use the above parts to either repair the old pump it need be, or replace it with the new one?

Charlie, I did clean everything off & it was still hard to see where it was coming from, but some oil on one of the pump bolts. 

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In order to fix the problem, you have to determine where it is coming from.  Clean the engine so there is no oil on it.  Run it and see where it is coming from.

If it is the pump, you will have to buy the gaskets separately as there is no oil pump gasket set that I am aware of.  The rebuild kit is for gerotor pumps and does you no good if you have a spur-gear pump.  The new pumps are only available as spur-gear pumps.


Lawrenceville, GA

Ok, I see there are Mellen replacement pumps out there as well as rebuild kits.  Which way have most of you gone?  The pump itself is around $107.   and the rebuild kit 45.       There is one Mellen pump with the driveshaft for $119.     Thanks in advance....   Mike

Well Thank you Richard, Where do I get them & is it very easy to do?
?    Mike

I think you need to take the oil pump off and renew all the O rings and oil pump gaskets

I remembered this post & came back to it because I had changed my transmission & torque converter because it leaked big time. Well, I have a pit in my garage so, while under my car figured I would check for any leaks.  None at the tranny,but found oil leaks around the oil filter/oil pump & oil pan.  Well I tightened the nut on the line going into the pump. tightened the oil pan bolts & I just had changed the oil with a New filter.  ( I have the adapter which I installed upteen years ago.    Well now it seems to leak oil more than ever, & I cannot figure out exactly where it is from????

There was oil at all three of these places. To start the troubleshooting, I removed the inspection plate on the bell housing, because oil had leaked in a streak down it.  When I got it off there was oil in the bottom of it.  I looked up after reading so much about leaks on the rear main seal of y-blocks , but no sign of oil up there or on the flex plate.
.  I had read about not tightening that tube nut to the oil pump as it might collapse the seal???     Also read about the oil filter adapter plate being warped.......    Any Ideas as I would like to take care of this..........

As there is oil pressure present at the gasket, then that would be the next logical place to look.  If you remove the pump, then check that the mounting surface is flat.  If you have the aluminum gerotor pump, then those can be prone to some distortion depending upon the gasket thickness.

Lorena, Texas (South of Waco)