I have just rebuild a P200 engine and started it yesterday. The engine picks up revs nicely, but then the revs stay high, even with the throttle fully closed (slide 1mm open).
Is the problem with the carb, or with the starting jet? My logic says if it keeps on revving with the throttle slide fully closed, it must get fuel from somewhere else. And the only place it could get fuel from, is through the starting jet. Or do I have it completely wrong?
(I tested the assembly for air leaks by closing the air screw, and the engine died as it should do. Thus no air leaks between the carb and engine).