![]() ![]() ![]() I did not replace the fuel pump - because it seemed to be working fine - He reported 'vapor locking' the entire time. I fixed and rebullt stuff all over the car so he could take a cross country trip. ![]() I mention this because I just worked on a friend's 1960 Edsel that had the exact same symptoms. but isnt one of the big differences between now and then the inclusion of alcohol? And what effect do we all know alcohol has on rubber parts? Especially fuel system rubber that was engineered for non-alcohol ingredients. People seem quick to condemn the fuel mixes we are using today compared to what was pumped years ago. What is the ONLY thing between the fuel line and the carb. (so the problem is not ignition related)ģ. You stated that the filter/carb was empty when it stalled. (by mouth even!) This means that there are no obstructions or problems on that side of the pump.Ģ. You stated that you could easily draw fuel from the tank. I wonder what would have been suggested if you had only described the symptoms you were having without offering a diagnosis.ġ. You got a lot of feedback & confirmation to your vapor lock diagnosis. You are correct to be suspicious of 'vapor lock' in 65 degree weather. Vapor lock happens ONLY when the fuel that is in the line BOILS in the line, and only from ambient heat. ![]() May I make a suggestion? Check/replace your fuel pump. I am interested in knowing if anyone else shares this problem. Could it be the push rod for the fuel pump is getting hung up? I have had three mechanical fuel pumps on there and each one had this problem, so I know it is not the fuel pump. I let it sit an hour, came back to it, and it fired up as if nothing happened again.īesides being haunted, what is going on here? I know I can fix it with an electric in line pump, but I am more interested in the academic science of what is physically going on that the original mechanical fuel pump works intermittently. I disconnected the lines on the fuel pump, sucked on it and got a mouthful of gas so I know the lines are free, and put them back on the pump. The carburetor was bone dry and little fuel in the filter bowl. I drove the car 10 miles, parked it, came out 20 minutes later, it went 500 feet and died. Yesterday, I took the car out for a ride. I figured for the summer time, it had to be vapor lock and was able to live with it. If I let it sit for about an hour, it will fire right up again as if nothing happened. However, after I parked it and let it sit for 20-30 minutes, it would fire right up, go 500 feet, and then run out of gas. When using it in the summer, it would start fine and run beautiful. ![]()
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