Pablo Azorin Posted August 2, 2017 Share Posted August 2, 2017 (edited) I'm having some troubles to keep the rpms stable between 5200 and 6200 rpms in my Polini Thor 200 Evo. I tried replacing the Walbro carb for a FreshBreeze Bing carb, but nothing changed. The engine works properly in the whole rpms range except from 5200 to 6200. For instance: with the the engine running at 5000 rpms, when I add a slightly more throttle nothing happens. I add more throttle and nothing. And then I add a bit more, and it suddenly goes to 6200-6300 rpms. The same on the opposite way. After take-off, I climb at around 6500 rpms. When I want to cruise, I reduce the throttle just a little and rpms drop to 5000. It's almost impossible to keep it somewhere in between 5200 and 6200 rpms. Is this a common problem on this engine? What can I do to resolve this issue? Edited August 2, 2017 by Pablo Azorin Quote Link to comment Share on other sites More sharing options...
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