ignition module not grounding ignition.
in General Tech Discussion
13 years ago
Hi,
I have a rotax 912UL installed in my plane. The engine starts and runs fine but will not shut down. I have traced the trouble to the bottom ignition module.I have disconnected the bottom module ground wire from the aircraft wireing and ran a wire directly from the module ground wire to a bolt on the engine and it still keeps running. I removed the spark plug wires from the plugs serviced by this module and the engine stars, runs and shuts down on just the top module With the engin off and both modules disconnected from the aircraft wireing, I ran a continuity check og both module's grounding wires. The top module showed no continuity between the module grounding wire and the engine. The bottom module showed no resistance at all from the module grounding wire to the engine. I even rotated the engine by had to preclude that these readings might be in only one position of the engine. I believe that the bottom module is bad but I'm hoping that someone wiser then I will point to a less expensive fix.
I have a rotax 912UL installed in my plane. The engine starts and runs fine but will not shut down. I have traced the trouble to the bottom ignition module.I have disconnected the bottom module ground wire from the aircraft wireing and ran a wire directly from the module ground wire to a bolt on the engine and it still keeps running. I removed the spark plug wires from the plugs serviced by this module and the engine stars, runs and shuts down on just the top module With the engin off and both modules disconnected from the aircraft wireing, I ran a continuity check og both module's grounding wires. The top module showed no continuity between the module grounding wire and the engine. The bottom module showed no resistance at all from the module grounding wire to the engine. I even rotated the engine by had to preclude that these readings might be in only one position of the engine. I believe that the bottom module is bad but I'm hoping that someone wiser then I will point to a less expensive fix.
