September 6, 20223 yr I think you are going to have to give a better description of exactly what you are doing if you are going to get a useful reply
September 6, 20223 yr Author Ok I did a lot to the bike it’s been off the road a long time here is what has been done . crank seals electronic Ignition w/ lighting coil different head new throttle cable with OKO 26 carb . it’s a 76’ ty250
September 6, 20223 yr Not as simple as you've got the carby choke on making it rev or the new throttle cable has no free play and hence holding the carby slide open?
September 7, 20223 yr Is the cable install correctly, well seated on top of the carb and at the handle bar Guy
September 7, 20223 yr Not to be funny, but, is it a new carb? If so, is it definitely a genuine OKO? There's a lot of fakes around that literally don't work. If the carb is snapping back ok it must be an air leak or something weird going on in the carb with the idle jet or choke.
September 9, 20223 yr I would too look up the gas cable installation and how the idle screw that adjust the slide is set up. With new and different carb I adjust the idle screw so that it allows the slide to close completely. When the engine fires up I then use the throttle to keep the motor alive while turning the idle screw in until the engine have a steady run. I then readjust the screw once again when the engine is warmed up and finally when I have adjusted the the petrol or air screw and the jets.
November 5, 20223 yr Since you replaced the crank seals, take a good look at them. Many years ago I had a CT175 that I had split the cases. I put in new crank seals, put everything back together, started it and it went WOT. Everything looked good including throttle linkage, etc. After head scratching I checked the crank seals and discovered the bore was about 1mm too big, allowing air leakage into the crankcase. This essentially is the same as running WOT. I replaced the seals, and problem solved. It's worth a look.
December 13, 20223 yr I've seen carb slides in backwards too many times. This symptom is the result. Follow BayDog's advice after checking the slide - cutaway towards the air filter. Edited December 13, 20223 yr by PapaWheelie
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