running an electric fuel pump the old mechanical fuel pump is removed and blocked. Problem is the house congaining oil for lunricating the cam for the old fuel pump is leaking. Not avle to locate where it excesses, my first idea was to refill. Question is; does the oil lubricate the bearings for the waterpump also?
In that case it will eventually fail as the huose runs out of oil, or does the oil only lubricate the cam and fuel pump?
Normally I would adress the problem in a better way, and replacing the pump, but Pokerrun this weekend😎

Did you find your leak? Mine's leaking too but not coming from the pulley side seal, fill plug nor impeller side. Obviously the mech. fuel pump gasket is next but I just installed new FP about 1 year ago so the gasket is new. Wondering if the housings can crack?

Keith

The oil (outdrive gear lube) lubes the bearings, cam and seals. Since your leaking the water will damage the bearings if it has not already. There easy to rebuild if you have a press handy, have done several

Oh, ok thanks

if you are leaking only the gear lube then i would say its coming from the front shaft seal behind the pulley. You would need to pull the pulley off....then pull the seal out and replace it then press the pulley back on. And if you are all ready there you may as well just go the distance and replace the bearings for good measure. Here's a tutorial for ya: How To: Rebuilding Merc Sea/Fuel Pump

Oh... i forgot there is actually a weep hole on the body as well right at the back end near the pump side...when looking at the fill port on the pump right below the fuel pump...look straight back to the pump side near the flange area and you should see a small hole there....could be leaking there too...either way its the seals