Home › Forum › Ask A Member › ’62 5.5 Fisherman won’t idle › Re: ’62 5.5 Fisherman won’t idle
Well, if the fuel pump diaphragm is leaking, it is allowing fuel to be pulled into the cylinder it is ported into…..Seems like a possibility if someone has been into that pump before you…
Like I say, my theory is easy enough to investigate without ripping that pump apart again. Get the engine running, then pull the fuel hose off and let it run. As the fuel in the lines and pump is used up, there will be no more fuel in the pump to leak into that cylinder, idle performance will improve as the affected cylinder is no longer being flooded by the fuel pump.
Keep in mind that most engines will pick up a little RPM just as the carb is running out of fuel, don’t confuse this with the fuel pump flooding issue I am describing.