360 Mechanical Fuel Pump Replacement

Started and pulled the Rambler out of the garage today.  Noticed fuel shooting out the fuel pump vent.  I assume a bad diaphragm.  It's a mechanical Carter M6505. Got a replacement.  I heard that I should pull oil dipstick and smell it to check for possible gas that may have entered the crankcase because of the diaphragm penetration/leak.  I think I do smell a faint whiff of gas so I will change the oil (darn, just changed about 200 miles ago).

PHAT69AMX wrote: Fuel Pump Arm is Cam Snout Mounted Eccentric Actuated, not by a Rod afaik...

Yeah, isn't it SBC's that use the rod that slips down? AMC doesn't as the pump arm goes directly against an eccentric on the front end of the cam. No rod, nothing to hold up or get lost or drop down (other than fumble fingers dropping a bolt which by the laws of physics will always roll to the very center of the car on the floor.)

Edited by Mopar_guy - May/18/2019 at 6:50am

Got it on.  No more spray out the vent hole.  But it leaked like a siv out the bottom outbound connection to the carb.  I think the flare was flattened pretty well on the old fuel pump.  Took off the metal line and re-flared it (double flare).  Helluva time lining up the threads at night (eyes not too good anymore).  Next morning bent the line slightly and got it threaded.  Carefully snugged it down, started the car, leaked, shut off the car, tightened slightly, started car, leaked slightly, shut off car, tightened slightly, started car, viola, no leaks.  I finally learned to take my time and not crank things like this down so tightly!