Hi all. 5th gen Prelude. I have an oil leak I can't find the source of.
So far I have replaced:
VTec solenoid gaskets
Distributor o-ring
Camshaft seals
Oil cooler O-ring
Valve cover gasket
and have pulled the oil pressure sender and sealed the threads


I have oil dripping onto the flex pipe of the exhaust. I can see the oil dropping off the oil pressure sender cover. So I pulled it, sealed it and put it back in. No dice. Replaced the oil cooler O-ring because it's right above it. No dice. Above that are the valve cover gasket/distro/vtec solenoid. No dice. Where else can it be coming from? I thought maybe rear main seal, but it looks to be too far to the right and too low to be dripping from the oil pressure sender. I'm at a loss, any ideas would be appreciated. Thanks

 

Check your oil filter. Sometimes when you take off the old one the rubber seal stays stuck on the block and maybe you have a "doubled up o-ring" on your filter. You can also buy the blue die kit that you mix in with the oil and then let it run. You get some fancy glasses and shine a certain light around the block and it will show any spot where it is leaking.