The mechanical fuel pump on my 240Z is leaking oil from a small vent hole in the side of the pump body near where the pivot pin is. The pivot pin was sealed with silicone by the previous owner (a common remedy), but the vent hole is leaking oil into the prop-wash of the cooling fan and spraying the plug-side of the engine bay. I guess the vent hole was also sealed with silicone because it was fine for the first week of ownership, but now leaks with each drive.
I had a few gear shifts when the throttle jammed wide open :-O until I worked out that it was the aftermarket carpet fouling the pedal and not the throttle linkages. Maybe the 7500RPM blew/sucked the opening clean again?
My previous car, an ugly Datsun 120Y (B210 in US?) with an L16 SSS motor exhibited the same leakage/oil spray (the 7000RPM episodes were always intentional in that car
so I guess its' a common problem in the L-series mechanical pumps.
Anyway, the vent hole is obviously intentional - but brand new Datsuns didn't spray oil all over the bay, so I guess the Positive Crankcase Ventilation setup is supposed to keep that hole sucking air not blowing oil?
Any ideas on how to stop the leak?
I had a few gear shifts when the throttle jammed wide open :-O until I worked out that it was the aftermarket carpet fouling the pedal and not the throttle linkages. Maybe the 7500RPM blew/sucked the opening clean again?
My previous car, an ugly Datsun 120Y (B210 in US?) with an L16 SSS motor exhibited the same leakage/oil spray (the 7000RPM episodes were always intentional in that car
Anyway, the vent hole is obviously intentional - but brand new Datsuns didn't spray oil all over the bay, so I guess the Positive Crankcase Ventilation setup is supposed to keep that hole sucking air not blowing oil?
Any ideas on how to stop the leak?