"It doesn't have a choke.
"It doesn't have a choke.
Ficht's run stratified at idle. That is, much more air than fuel is admitted into the engine. The plume from the injector is combustible, but the rest of the cylinder is almost completely air. This makes it and most other DFI engines prone to running away if another fuel source is present. I would pop the cowl and look for any leaking fuel. A fast/runaway idle is usually the first sypmtom of a fuel leak. I bet you can guess the second symptom.
If that's not the problem, check the throttle cable to make sure it's working the throttles properly. If that is all working properly, the TPS sensor needs to be checked and/or calibrated with a computer connected to the engine."