well after the 3rd time of trying to fix this problem, i have come to a dead end suicide after we installed the walboro pump a few weeks ago, i just noticed that the needle on the stock gauge goes to 1/4 and then stops. my fuel light comes on when i am almost out of gas so i know that works. we took the pump out and looked at the sending unit and it is fine. as soon as we took out the fuel pump and i turned the key on (not starting the car of course) and the needle read the correct fuel depth. we put everything back together and it worked for about an hour. i filled the tank, drove around for a few days and the needle is doing the same thing all over again. this is the 3rd time now and i have no idea why it would be doing this. there is nothing blocking it or even touching it except fuel.
do i need to reset my needle since i went to a bigger pump? i have the walboro 255L.
thanks for any help

 

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