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Technical Support / Re: Fuel Quantity Issue
« Last post by Carl Boger on December 10, 2025, 11:19:39 PM »Nicholas,
If memory serves me right the sending unit is on the drivers side of the tank a few inches down from the top. There should be some nuts on studs that stick out of sending unit. The wires go the the back of the fuel gauge. If making sure everything is clean and tight on both ends doesn't fix the issue it could be the sending unit itself or the gauge.
Sending units are known to wear out. I had to replace mine and it shows the tank to be completely full for the first two hundred or so miles. By the time it drops to 1/2 tank it is fairly accurate. I really don't let it get to far below 1/2 so I don't know the accuracy there.
The gauge is simply reading a voltage level from the sending unit. The voltage changes as the float arm swings up and down. You can take a screwdriver and touch both post on the back of your fuel gauge to see if it swings all the way to the full position.
Hopefully this will make sense and help you some.
If memory serves me right the sending unit is on the drivers side of the tank a few inches down from the top. There should be some nuts on studs that stick out of sending unit. The wires go the the back of the fuel gauge. If making sure everything is clean and tight on both ends doesn't fix the issue it could be the sending unit itself or the gauge.
Sending units are known to wear out. I had to replace mine and it shows the tank to be completely full for the first two hundred or so miles. By the time it drops to 1/2 tank it is fairly accurate. I really don't let it get to far below 1/2 so I don't know the accuracy there.
The gauge is simply reading a voltage level from the sending unit. The voltage changes as the float arm swings up and down. You can take a screwdriver and touch both post on the back of your fuel gauge to see if it swings all the way to the full position.
Hopefully this will make sense and help you some.

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