yankee-flyer
Well Known Member
here's one for the knowledgeable Rotax guys. At the 400-hour inspection, both carbs were removed, cleaned,and new gaskets fitted by an A&E who's had thew long Rotax training course. He also set the floats using a new tool from Rotax. Ever since, when I do the normal cold start sequence (worked fine before) the engine will start on full choke, but after a few seconds it stumbles badly, like sparl plus misfiring and RPM drops. Going to half choke immediately helps for a half-minute, then the RPMs drop WAY into the yellow arc. I've got to go to no choke at all by about 30 seconds in order to keep in running, even with OAT at 30 deg and no temperature movement on any of the displays.
I don't see how it's possible to "over choke" the engine-- I'm thinking mixture is too rich.
Any thoughts at all? Thanks.
Wayne 120241/143WM, 420 hours.
I don't see how it's possible to "over choke" the engine-- I'm thinking mixture is too rich.
Any thoughts at all? Thanks.
Wayne 120241/143WM, 420 hours.