Exessive Mag Drop and Rough Running
in 912 / 914 Technical Questions
8 years ago
I am putting a "new to me" used 912 on my airplane and have just gotten everything back together to where I can start running the engine. The engine has sat for a while during the rebuild of a project I purchased, a Rans S-19. Got the engine running last weekend and am experiencing excessive mag drops on both A and B systems. At 4000 rpms I am getting a 600 rpm drop and rough running on both A and B.
I have rebuilt and synced the carbs and installed new plugs. The engine starts right up and idles smooth at 2000 rpms. It is smooth through transition all the way to full throttle where I am getting 5000 rpms static. When I do the mag check the engine runs the same on both A and B = Bad! :-)
Any direction you can provide will be most appreciated. Anyone with Rotax experience in North Mississippi? I know Ronnie is in South Mississippi but that at the other end of the state from me.
Thank you!
Dan Willis
I have rebuilt and synced the carbs and installed new plugs. The engine starts right up and idles smooth at 2000 rpms. It is smooth through transition all the way to full throttle where I am getting 5000 rpms static. When I do the mag check the engine runs the same on both A and B = Bad! :-)
Any direction you can provide will be most appreciated. Anyone with Rotax experience in North Mississippi? I know Ronnie is in South Mississippi but that at the other end of the state from me.
Thank you!
Dan Willis
