ok now i have this issue, it still will not idle no matter where i set the air screw and the slide screw. it has new rings, a base and a head gasket. the compression did not seem to change, still was 50 psi. i took the carb apart and all the jets and blew air thew them and i could feel air go thru the carb where it looked to me where the air was supposed to go.
i put a 90 deg cpvc elbow on the carb and i put a pc of sponge in it and cut it down until it was just to thin to stay in the port, and still it will rev and hold speed and then just start slowing down and stop. i can crank it back up but i can't for the life of me get the thing to idle. so outside of a bad carb what else might i look for?
i have set the air screw from closed to all the way out and the main slide screw i adjust it to slow the engine and i get it to say 2000 rpm and then it starts to slow down and stop.
i'm no stranger to engines but i do 4 cycles not 2 cycles, i guess it could have bad crank seals but how do you test for them. and i guess if it does then it is better off going as a part bike as i'm not tearing it apart for crank seals.
anyway to me it sounds like a carb or crank seal i do not see anything dripping from the coil side, but i guess it could be leaking on the drive side. so may i would take the fill cap and loosen that and spray with soap to see if i have bubbles? i guess that will tell me. or loosen the oil pump and spray that and see?
thanks for any ideas on how to get one of these to idle bp.