I taxied a 2007 C172SP out to the runway this morning. Temperature was about 40, airport elevation is 600ft. My student pulled the throttle back to idle at the hold short line and the engine sputtered and died. I started it back up, ran it up to 1200 RPM or so, then pulled the throttle back again. The engine quit again.
I tried restarting it twice (warm engine start then flooded start), but wasn't successful. Rather than burn out the starter, I decided to get towed back to the ramp. I read through the taxiing procedures in the POH and obviously it read, "lean for taxi." Is there anyway too rich of a mixture can lead to flooding and thus lead to the engine quitting? What are the odds that it's a larger issue with the fuel system?
I tried restarting it twice (warm engine start then flooded start), but wasn't successful. Rather than burn out the starter, I decided to get towed back to the ramp. I read through the taxiing procedures in the POH and obviously it read, "lean for taxi." Is there anyway too rich of a mixture can lead to flooding and thus lead to the engine quitting? What are the odds that it's a larger issue with the fuel system?