I have a 1955.1 Model 3100 with an all stock 235.
Last weekend I drove about 80 miles and then sputtered to a stop. Plenty of gas. I have clear gas filters both before and after the fuel pump. The one on the fuel tank side was filled with gas. The one on the carb side was bone dry. Cranking accomplished nothing. After waiting about 45 minutes, fuel slowly dribbled on its own into the upper filter. She restarted but only ran a few miles before the same thing happened.
A local "oldtimer" garage looked at it and said it was vapor lock and there was nothing to be fixed.
I picked it up today and she did the same thing after about a 35 mile run. It was not very hot (80's), the vehicle temp was normal and all the fuel lines are original and in the right places. So, I don't believe the vapor lock idea.
Do you think the fuel pump could be weak (perhaps a small tear in the diaphram) so its OK when cool but losing power as it gets hotter? I am inclined to just go right to putting in a new fuel pump. Am I missing something?
Also, any tricks to fuel pump replacement? How do I keep all the gas from running out when I disconnect the tank side fuel line from the pump?
Thanks,
Trooper Jeff
(who's tired of sitting by the side of the road)
