Hi Bert, some new to test this morning with the 25RC and a 25LA (this engine have only 1h or 2h of running).
And same problem with each engine ☹️



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I will try with some gasoline free of volatile components.

If after this last try nothing change, I think I will let this engine run with metanol 🫤

I don't understand why I have so much bubbles come from the valve, to the point it cut off the engine.