I hope that this is my last technical question. My gas gauge was working except sluggish (never reaching F even when very full and seeming to bottom out at 1/4 tank and never getting to E). So, during my major restoration I took the tank off, had it sand blasted and powder coated. I replaced the sending unit. The wire lead is securely attached to the sending unit, but the gauge is not responding even to a full tank. The rest of the gauges are fine.
Now I have one theory and see if this makes sense. With one lead wire running to the gauge that implies the tank must need to be grounded. Is it possible that the powder coating (plastic non-conductor I would assume) is insulating the tank (plus the rubber washers at the four holding bolts) so it is not getting grounded? Before I blow things up, I wanted to ask if it would it be reasonable to run a ground line to a bare metal spot on the tank to see if that corrects it? Thanks in advance.
Now I have one theory and see if this makes sense. With one lead wire running to the gauge that implies the tank must need to be grounded. Is it possible that the powder coating (plastic non-conductor I would assume) is insulating the tank (plus the rubber washers at the four holding bolts) so it is not getting grounded? Before I blow things up, I wanted to ask if it would it be reasonable to run a ground line to a bare metal spot on the tank to see if that corrects it? Thanks in advance.
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