Hi everyone,
We have some trouble with our F100B (6OC X 1014050), which we have as a dual engine setup.
It will run absolutely perfect between idle and 2500 RPM, as well as 3500 – WOT, but anything between 2500 and 3500 it will stall rather quick, within seconds. It sounds like it is not getting enough fuel or too much air, as the engine sounds very low and “hollow”.
What I have done so far:
- Swapped TPS between the engines and verified correct voltage.
- Completely disassembled and cleaned the carburetors and all their internals.
- Swapped spark plugs between the engines.
- Swapped coils between the engines.
- Verified a good continues rhythmic spark is present by the use of a timing light.
None of the above have changed anything at all or let the problem travel to the second engine.
My last thoughts would be a chipped reed (although I would assume that this would impact idle more than mid RPM), the stator (Although I would have expected an unusual spark pattern) or the CDI itself.
Any thoughts are greatly appreciated.