The C150-152 fuel system has been one of my biggest fixations during my tenure as club chief "student". The more I look into the fuel system, the more I find out I don't know. It's a simple enough system, and quite reliable really, but neverless the cause of more problems than other parts of the airplane. (Especially it's annoying custom of running dry when not replenished.)
Fuel gauges? They are basically useless. Use the tach time or a stopwatch to calculate how much fuel is left.
My latest venture into my fuel system education is looking at the aftermarket fuel flow instruments. They're not fool proof either, but with correct use they can provide a true idea of fuel use, minute by minute, range, and fuel required to the destination etc.
Wayne, Stephen, Gordon and other's who have installed these instruments are fans. I'll be digging into the issue and producing a typically over detailed article for the newsletter later this year.
