Hi.
My problem is a very rough running 912 ULS between 2350-2650 ish rpm after a renovation of the caburettors, i have made mecanical sync. and after that an pneumatic sync The waccum left/right is fine at 1700 rpm and runs smooth also after 3300rpm it runs smooth and vaccum right/left is the same. Air/fuel mixture screw is 1,5 turns out so that is according to Rotax.
The brass Float arms has of cause also been adjusted.
the EGT on left side is 25° lover in idel than right side, and 10° higher at 3600 rpm than the right side.
I have tried a lot of adjustments now, but nothing helps.
Even at the very rough running spot the vaccum is the same Left and right. I belive a lot of you know what frustration i am going through :-)
Any suggestions from the community ?
Data : Caburetors are 8 years old, and have 460 hours. ( i only renovated the caburators because of a slightly rough running area 2350-2600 rpm and was told it could be worn needels ) I did not use ultra sonic cleaning.
Best regards Allan
