Jim Weir wrote:

The function of a fuel gauge in a Cessna is to tell whether or not the master
switch is on.

Yeah, the gauges in my Skyhawk have never worked worth a damn. Every
couple of years my mechanic does some scraping on the electrical
contacts of those crappy little float things accessed behind the
filler caps and they work well enough to pass inspection. I forget
how many hundred dollars it was going to be to replace them. Doubt
replacements would do any better considering how poorly the gauges
seem to work in most Cessnas.

Jim Rosinski
N3825Q