The Stovebolt Site Forums The Shop Area The Electrical Bay Fuel Tank Sending Unit

There is a simple way to verify if the sending unit is the problem or the gauge/wiring. Ground the wire (at the sending unit) that goes to the gauge. No need to disconnect, just use a jumper from a known good ground. That duplicates the full signal from the sending unit. The gauge should read full. If if stays empty, the gauge and/or wiring has an issue.

Note: This test does not eliminate the sending unit issues but with troubleshooting, you have to start somewhere.