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have a friend listen in the fuel fill door and turn yiour key to the on position and listen for a wineing sound if you hear the wine your fuel pump is working how ever sometimes rarely it will still run but pump no fuel then you can take a fuel line off at the most conveinent place(put end in a mason jar or something anyway have something to catch the fuel or youll have a mess ) and do the same thing turn the key on and see how much pressure you have it should have a great squirt come out till pump quits running some where between 30 and 60 pounds(for efi)5 pounds (carb) if not then its the pump you can check the pressure befor and after the filter to check it hope this helps

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Q: How do you tell if it is the fuel filter and not the pump?
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