67-72 Chevy Truck fuel gauge diagnostics 101

[TBONE1964]

Originally Posted by Sparkys66

i purchased a stock replacement gauge for my 72 blazer.

Mark

When you say stock replacement, are you talking used OE, NOS or new aftermarket. Most of the new aftermarket gauges do not require the stock style porcelain resistors. If you are using the stock resistor on an aftermarket gauge, that might be your problem.

Depending on where you bought the new fuel gauge, was the needle removed for paint and not put back on in the correct position?

Just some thoughts.
Tom