Oil leaking from Mechanical fuel pump breather.

[Luke240z]

What seems to be the problem... At first I thought it must be the gasket between the fuel pump and the spacer, so I put on a new gasket and sealant. Then the problem persisted. It only leaks maybe 5-10ml after a 30km drive, but when the engine bay is nice and clean it can pi$$ me off no end. How can I fix this?

After a second look closely with the car running and nice and warm, it is definately spitting out from that little hole on the fuel pump.

Luke

[Bambikiller240]

Diaphram inside the pump is shot. Buy a new pump

[Luke240z]

Can you replace the diaphram or is it easier to get a new pump. And if so where?

Thanks

Luke

[Bambikiller240]

AFAIK, you cannot get the diaphram separately.

In the USA, almost any Parts Store can ge the pumps. An NISSAN OEM pump would be quite expensive compared to an OEM equivilant from a parts store.

[beandip]

Some times when the diaphram fails it pumps fuel into the crankcase. Be sure and check the oil !! Go electric, look for a RX-7 in the boneyard '79 or '80 any of them just as long as they were NA and not injected. They work just fine and at the riight pressure. Your 240 is already wired for it. Gary