Have been playing with some tracer dye and a UV light and think I have pinpointed where my oil leak is coming from. Trying to find any info whatsoever on the dizzy o-ring. Looks like it's only available from the dealer? Called the parts stores and doesn't seem like anyone in the aftermarket makes one; no listing was available for it. Can't find much info on replacement in the manual or online either. I believe the part number is 02875923, however looking at the exploded diagram below this doesn't look like the right O-ring.

It is find # 8. Description is:

O RING. Distributor. . O-RING, O-RING, Dist. Housing, O-RING, Dist. Hsg., O-RING, Hsg.. 11` Clutch, 12` Clutch, 13` Clutch, Distributor, Housing to Block, Torque Converter, w/3.9L Engine (distributor base), w/5.2L & 5.9L Engine (distributor base).




I see a listing on eBay for this part # and it looks like it is larger diameter and correct for the dizzy housing to block. Can anyone confirm?

 

Are you getting oil inside your distributor?

 

This should work: http://www.jegs.com/i/JEGS-Performan...ductId=1352558

 

No, im getting oil on the boss on the block atop which the distributor is mounted. Runs down to the bellhousing

 

is it coming from higher up on the distributor? Or, out from around the base? I don't recall if there is a gasket on the bottom there or not. (chevy's had one....)

 

Maybe it's the oil pressure sender. And there's no gasket under the dizzy, just the o ring.

 

id put more money on it coming from the oil sending unit or even out of the back of the intake manifold. that is of course if the plenum is blown :P but id still lean more towards the oil sending unit. should have teflon on the threads.

 

snowbound has the right part, there is no gasket for the distributor, just an o-ring. I initially thought it was the sender so i replaced it and sealed the threads before installing; same leak. Also did the rear main last year and it's no better. I got more technical and started using the UV dye, it is tough to see back there but it definately looks to be coming from the distributor as the oil is atop that boss. I am not ruling out the manifold gasket having some contribution to this ( as it likely does) but I am fairly confident the dizzy is leaking and want to start with smaller, cheaper stuff before diving in. I am just surprised this is not a more common part.

 

Did you ever figure out what was causing this leak? I have the same issue right now.

 

A 5yr old thread man, this guy hasn't been around in a while