Banshee runs good at idle and at wot but when held at about 1/2 throttle left cylinder stops firing

[Joeschwab]

I did a full rebuild on my banshee it is running good it runs great at idle but when I hold the throttle at about 1/2 the left cylinder stops running when I give a quick Rev the cylinder fires great but not when I hold it open

[Oldskool83]

Coil is shitting the bed.  It sounds electrical, OR you main jet has something clogging up in your getting.  If your fuel is more then 2 weeks old it better have stabilizer in it for sure.

[Joeschwab]

Carbs have been cleand and if the coil was bad and I switch the wires wouldn't it change cylinders and if it was Gas wouldn't that effect both cylinders

[Joeschwab]

And what octane should I be running with 16 cc domes

[sheerider11]

And what octane should I be running with 16 cc domes

What is your compression. Unless your way up in the mountains, you need race fuel.

[Joeschwab]

Compression is at 150 I also run 6 degrees timing that's why I was running 110

[Joeschwab]

And yes I ride from 5000 feet to 9000

[Larry's Shee]

Did you remove emulsion tube when you cleaned carbs? Both needles same and same clip?

[stunter01]

Did you change the crank or had new condors fit. Had the same problem years ago and the crank

was not pressed true .

[Joeschwab]

What's condors