Before I pull the smallie engine and start chasing air leaks, help me make sure Iím not overlooking something simple.
Itíd been sitting for a few months unridden, so last week I thought Iíd take it for a ride. It fired right up but the idle shot through the roof. It was revving pretty much out of control. Choke wouldnít kill it. Throttle had no effect.
Throttle cable wasnít binding.
Slide wasnít stuck.
Carb was tight on manifold.
Killed it and started it again. Same thing. After about a minute the idle dropped down and everything was fine.
Tried it again the next day, same thing. Screaming idle at cold start, then settled down after about 15 seconds.
Normally Iíd say leaky seal but there isnít a lot of smoke. Oilís not gassy. No sign of leaks around flywheel.
Polini CP24 carb, Polini 130 kit, cases matched, PM40 pipe. ET3 ignition, 18į.