Question about 1984 Cadillac Eldorado

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1984 Eldo. When gauge reads 5 gallons, sometimes 6, it is empty.

Not much more to say. Since my car has only 37000 miles on it, I assumed the old gas in the bottom of the tank may have gummed up at some point in its life and is messing up the sending unit. I have debated dropping the tank to see if this is the case, and possibly replacing the sending unit.

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Depending on how long the vehicle sits between the times you add fresh fuel, and take it for a spin etc, would determine how bad the fuel is in there. You might want to try adding fuel stabilizer if vehicle only gets fresh fuel occasionally Then I'd start looking for my ground wire at sending unit on tank, and check that it was good, before getting too carried away. On the other hand if it has been long enough for build up in the tank & that "shellac" smell coming out of tank, then yes, I'd advise pulling tank down, if for no other reason than to clean tank out, as well as flush fuel lines the best I could as well.

Posted on Jul 16, 2009

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