View Full Version : Gasahol and fuel pumps

05-16-2007, 09:33 AM
"Boy, do I hate that crap! My perfectly good mechanical fuel pump started acting up on me after our initial launch cruise run. The motor made enough power to plane off, but then started surging. A few moments later and she started popping through the carb.

Drained the water sepoarator and changed the filter, but no luck. Pulled the fuel pump and took it home to test it vs. a new one. Vacuum and pressure responses were the same, so I put it back on the motor.

Guess what? Problem solved. My conclusion? A build up of tiny crud particles in hte pump was holding a check valve open.

Thanks gasahol!