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  View original topic: school me please, why a fuel sender will never ever spark Page: Previous  1, 2
slayer61 Tue Nov 04, 2025 11:53 am

Heiferman wrote: busdaddy wrote: Even if it did the atmosphere in the tank is far too rich to ignite...
It is my opinion that is not something that can be depended upon.
I am pretty certain all of us have had a car sitting around a while with just a dab in the tank and a poor cap seal. And then we worked on electrics. There certainly can be a point at which the atmosphere is no longer saturated and explosive.
I go with post #2 above from @slayer61 and the notion of super low voltage.

It's actually a resistance circuit, using a variable ground to register voltage at the gas gauge



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