are you back out at felts? what times are you generally there? You can also take the plugs out and look at them. chances are the front plugs I believe might be black, that's not good. although it can be normall, for these generally are darker than the others. If need be I have a spark plug cleaner. quick clean and back in. Do you have a key switch for mags, or flip switches. I have flip switches and I feel that's the only way to go on the 912.
The other day when doing a check over, I found my cable slipped out at the carb for the choke, that can kick the choke on just a little. the fix is to put a wire from the carb to the wire to keep it in place.
One more thing, if you choose to be able to crank the motor with the mags off, you should be able to install a starter button seperate from your keyed mags switch, that is if you have a keyed switch for everything. I have a starter button on my rv. makes for bring up oil pressure with the mags off, very usefull.
Well Slyfox came over and listened to it- he found one of my chokes slightly open, cleaned the plugs and tried again- same issue as before. So now he has loaned me a prop to try- and the warp drive tool to check mine. Thanks Slyfox!! I will try to get to it on Monday- will update the results.
Well Slyfox came over and listened to it- he found one of my chokes slightly open, cleaned the plugs and tried again- same issue as before. So now he has loaned me a prop to try- and the warp drive tool to check mine. Thanks Slyfox!!
Steve's a good man.![]()
Hope you get to the bottom of this problem.
I agree on the ignition switches and start button. Love that setup.
DesertFox4
Admin.
7 Super Sport912 ULS Tri-gear
I didn't point out when listening to the engine, but the older 912ul engines had a distict whirl noise. My old one did it and I heard it out of yours. I still say that prop of yours has a problem. it sure had a nasty wobble when watching it from the side. really hope we can get to the bottom of your problem.
Well- checked the pitch on the warp, and it was perfect. So I pulled it off and put on Slyfox's known good prop(powerfin), crossed my fingers and fired it up- and got no where
Went back to the basics, compression check, pulled valve covers, rechecked plugs, out of ideas. About ready to order a 100 horse and start over
So next stop Jim Scott Aircore Aviation on Friday hopefully as I am at a complete loss.