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Old 04-16-2024, 12:39 PM
John Milner's Avatar
John Milner John Milner is offline
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Join Date: Nov 2004
Location: Oklahoma
Posts: 1,051
Default Quadrajet Accelerator Pump Issue

I have been fighting an issue with my Quadrajet on my 74 GTO. It is very hard to start the car when it has sat overnight. The car runs and performs great when it finally starts and will start the rest of the day easily. I initially thought that the bowl plugs may be leaking overnight, causing it to be hard to start. However, I have had the top off of the carb multiple times and it will have plenty of fuel in it. I can look down primaries and the accelerator pump shot seems very weak to me. One side just barely dribbles out fuel. I have swapped out accelerator pumps twice. The pumps that I have replaced look normal upon removing them. Does anyone have any suggestions as to what I might take a look at to fix the issue? I am running out of ideas. Thanks