Fuel Guage Issue
Have a class a on a F53 ford chassis. Havent driven it for years but am currently getting it out of mothballs. When I parked it over 6 years ago, the fuel gauge would only rise to 1/4 full with the key on. Didn't matter how much fuel was in the tank, even full. With the key off, it drops to below zero. I know there were lots of problems with these fuel pumps but does this sound like a faulthy sending unit or a wiring issue? My mechanic is now draining the fuel tank as the fuel is over 6 years old. While he has the fuel tank off, I am just curious if replacing the entire fuel pump/sending unit would solve the fuel gauge problem. I would really like to not have to count miles. Any advise would be greatlly appreciated.
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