Re: Polini 6.2 hunting
I had the same kind of trouble when I put a 19mm Dell PHBG clone carb on my 50cc ( 46cc ) C1 water cooled Blata clone engine, replacing the 14mm SHA Dell clone carb and bigger manifold. The 19mm had a stock .84 main jet, with the big carb it was to lean. A member told me to put a 1.01mm main jet cause there was to much air. With that mod it was to rich at the low end but pretty good on the high end. When I let off it would run on for a few seconds and then drop off.
Its been years since I did that, but, it might have been sucking air behind the carb, I would go over you carb and intake and reeds area, cause it sounds like an air leak. The air coming in behind the carb draws fuel up the main jet and it keeps running.
Empty Pockets Racing: The difficult we do, the impossible takes longer.....