I have a '64 Electra with a dual quad 425 with A/C (return fuel line). The problem I have is that when the car cools down it has to turn over A LOT and I have to pump the gas a lot to get it to start. I even added an electric fuel pump to let it run for a while before I try turning the engine over but it doesn't seem to make a difference. How does the return line fuel filter work? can it be allowing the fuel to go back to the tank instead of the carbs? It almost seems like the return line is syphoning all the fuel back to the tank while it cools down. Any ideas? Thanks, Larry
Ok, I figured out the problem and want to pass it on. The accelerator pump on the rear carb was severely deformed. I can only surmise it's from ethanol fuel ( I was using 94 octane but it had ethanol in it). I have switched to a 91 octane fuel from Shell and it does NOT have ethanol in it. I switched out the accelerator pump. 2 pumps on the gas pedal and turn the key and it fires right up I'ma a happy man and will NOT put ethanol fuel in this car again!!!!
Yup; used to run Mohawk 94 that had ethanol in it, it ruined my freshly rebuilt Q-jet. The kit that was tossed into it pre-dated the ethanol thing, so instant garbage. You have to look but most high octane stuff offered by most others doesn't have any ethanol, just the cheap gas retailers seem to. For that reason I don't put Costco into the old Buicks. Glad to hear you got it fixed!
Larry, the next time you fuel up with ethanol free gas, take a close look at the pump. Here in sunny southwest Florida amid the red tide, algae, and dead fish, I have two local Shell stations that sell 91 ethanol-free. In small letters on the pump it says "Not a Shell product." I still buy it for the Model T and it works fine.
As far as I've read, the Shell V-power 91 is ethanol free, and it is made at Shell Scotford outside of Fort Saskatchewan. It even says on the pump "ethanol free", whereas the Bronze and Silver say "May contain Ethanol".
