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gas gauge calibration problem

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Old Sep 19, 2022 | 01:27 PM
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Default gas gauge calibration problem

Have 1972 C3 convert. Gas gauge shows empty when the tank is still 1/3 full. How do I adjust/recalibrate to make it more accurate? Thanks
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Old Sep 19, 2022 | 04:28 PM
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Good question. Mine does this as well.
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Old Sep 19, 2022 | 05:38 PM
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Remove sending unit. Bend float arm rod to compensate. reinstall and test to see if you bent it enough. Repeat.
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Old Sep 19, 2022 | 05:41 PM
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Bend to raise or lower the float???
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Old Sep 19, 2022 | 07:00 PM
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Lower. so it hits empty sooner. Plug in the wires with the sender out of the tank. Test it. then reinstall
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Old Sep 19, 2022 | 08:41 PM
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You MAY want to bend it lower just enough that it still has 2 gallons of gas in the tank when the gauge shows "E" . It's better to be "running on empty" than stranded on empty.
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Old Sep 19, 2022 | 11:32 PM
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I have a 70 that had that problem ,thanks for my small hands just put my hand threw the top and fixed it with out taken nothing apart just no SMOKING
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Old Sep 20, 2022 | 04:40 AM
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That's impressive, you must have little stick arms as well. No bloody way my hand and arm are going to fit through the filler.
And WHAT! No Smoking! I don't know. Don't think I could think about doing this without a cigarette in my mouth. Where's your spirit of adventure!
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