912 ULS ignition failure
in 912 / 914 Technical Questions
11 years ago
I have a intermittent ignition failure on a 3 year old Rotax 912 ULS (approx 1200 hrs). During runup ignition check it will completely shut down on the right ignition. This isn't a sputter, cough thing, it just completely shuts down as if you turned off the key.
I have run diagnostics on the ignition system (Dr Rotech), replaced the ignition module and checked the ignition switch, no help. When I swap the plugs between the ignition modules and the coils the problem moves the "left" which tells me the problem is on the coil side of things. Since the engine completely shuts down, I believe it must be something in common with both coils. That pretty much narrows it down to the ground wire. I have cleaned the connection and applied lithium grease but it doesn't solve the problem.
Am I missing anything?
I have run diagnostics on the ignition system (Dr Rotech), replaced the ignition module and checked the ignition switch, no help. When I swap the plugs between the ignition modules and the coils the problem moves the "left" which tells me the problem is on the coil side of things. Since the engine completely shuts down, I believe it must be something in common with both coils. That pretty much narrows it down to the ground wire. I have cleaned the connection and applied lithium grease but it doesn't solve the problem.
Am I missing anything?
