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Old 09-14-2020, 07:28 PM   #5
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Join Date: Aug 2010
Location: McMinnville, TN
Posts: 1,920
Default Re: Gas tank sender unit.

They work essentially off of air pressure (very slight at that). In fact you can test a 32-35 fuel gauge by tapping the inlet connection very fast with your thumb, and then apply pressure.
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