The sending unit is like a float that raises and lowers as you use gas, like a toilet float. If the float cracks and gets gas in it it will not work correctly. Or if it has been in a tank with out gas in it might rust inside the tank and not work correctly. A gas gauge could go bad too. It all depends on how the car has been stored, moisture, etc.
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Ray
1970 SS Chevelle Van Nuys Built
Last edited by shadowgray396; 02-19-2012 at 06:22 PM.
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