I have a motorized bicycle that idles super high, the further I pull
in the clutch, the faster the idle, it sounds like it might
blowd up sometimes.
I checked my throttle cable by removing the air cleaner,
it does not close the carb completely when cable relaxes.
The cable snaps back fine and opens completely,
Im thinking thats ok and maybe its a manifold gasket leak?
Not that experienced in Motorized bikes, anybody have a suggestion?
Thanks.
You've got something wrong with your cable somewhere or carb, cause the barrel slide should be able to close the carb completely. The way the idle is set is the idle screw props open the slide a bit, sounds like yours is staying open on its own...
An air leak would also make you have a high idle, but if your slide is propped open thats your problem...
Perhaps your throttle isn't assembled properly? Or you were given the wrong throttle cable somehow? Or the adjustment on your throttle cable is adjusted all the way out? If you pull the cable out of the throttle and let it go the slide in the carb should go all the way closed, are you sure you have the slide installed in the carb in the proper orientation? You didn't say what kit or carb you have so its hard to be very specific, but there should be a slot down one side of the slide and that slot needs to go over a peg inside the carb, if they are mis-aligned the slide wont close properly. Or perhaps you have a burr inside the carb that prevents the slide from the full range of travel, or the slide is bent up or something?
It's a pretty simple mechanical thing here, the slide should be pushed all the way down to close by the spring and only be propped open slightly by the protruding idle screw, so you'll have to dig in and figure out what is keeping it propped open so far....