i have had the same problem sometimes when the gas was not clean enough… now with the additional filters works fine…
one thing but i must modyfie…the axle of the throttle in the gasoline carburettor stays very exact in the outer metall for not sucking additional air inside, what disturbs the gasoline air mix…
for wood-chargas it can stay a bit looser, i worked a bit on the axle with sand paper, and this works really fine, only for gasoline use it works not more well i think…
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