New 68 project, no fuel gauge reading. Looks like the tank and sending unit may have been replaced before. What should I check?? Thanks.

 

Ground the lead at sender. If the gauge works, then the issue is with the sender.

 

Before replacing the sender, check the float.

The float is made from two pieces of copper soldered together. Solder breaks down, gas seeps in, float settles to the bottom of the tank.

COAZ-9202-B .. Fuel Sending Unit Float / Available from Ford.

Applications: ALL 1957/79 Passenger Cars/Trucks / 1961/79 Econoline / 1966/79 Bronco.

 

What I would do is check the guage itself and the connection where the wiring meets all the guages with a meter. you should see a flat piece of copper that goes from the wiring to the guage. Check that as well.

 

I had a problem with mine and it was the voltage regulator on the cluster.