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I've had the white princess for 3 years now and never had this problem until this year. Whenever she gets hot, sometimes it will stall when at idle.
Whenever I stop for gas, it will start up and then stall after 20 feet of driving, never starting again until the engine is very cool. At first I thought the distributor was the problem; replace pick-up coil, module, harness. The problem still exists. My next thought was vapor lok so I install a new 160 stat. Engine is running much cooler now :) but I still have the stalling problem. I've posted a previous thread about vapor lok and received some great suggestion but I'm beginning to wonder if vapor lok is really the problem :confused: :confused:
If vapor-lock is not the culprit then I would replace the fuel filter and perhaps even the pump (weak springs/diaphragm).
If the starter spins the engine alright when this occurs then starter heat-soak is eliminated.
Which carb are you running? You may be perculating the fuel in the carb causing the needle & valve seat to stay open. Does black smoke come out when it does fire up? Or smell like it's running rich?
It's odd that it only happens on the fill-up event.
Stewart & 73454 - The full pump issue has come up more than once. Looks like that might be something to replace. Don't remember ever replacing a fuel pump. What kind of job is this? (I'm not a real mechanic, I just play one on TV). The carb is original and as far as I know, has never been rebuilt; maybe that's something which I will have to consider too....
Replacing the pump is a peice of cake. Two bolts hold the pump to the block. Either 2 or 3 fuel lines - not sure if the 76 has the return line. The most difficult part is getting the pump rod to stay in place while you insert the new pump. You'll see what I'm talking about when your in there.
Put a can underneath to catch the gas your going to loose. Don't smoke while doing it :D and don't remove the fuel lines while your underneath the car.
Fuel pump is not too bad. You just have to be patient as your fingers have to make that figure 8 to get the bolts out. And then keeping the gasket on while you compress the pump level is always a fun thing. Just be ready to stay under there for awhile. Mine took about an hour to pull off and replace... have you considered a fuel pressure gauge ?? I have been through the S hose collapse and it only collapsed when drawing fuel.. :crazy: So just because it looks good when you check it, does not mean it is good when the car is running. Good luck!