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Re: Moped won't stay running on low throttle, it will...
Your IDLING JET IS CLOGGED or the settings on the SLOW speed on the idling screw is not correct. Sometimes dirt can cause issues and so it might need an overhauling of the carburater.
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Assuming everything is working correctly, you may have to drive it up to 50 miles for the computer to relearn the basic perimeters. I think you can also turn the key on, open the throttle to wide open, then close it 2 or 3 times to reset the memory in the computer. Not sure about Jeeps.
You've been running the unit with the wrong oil to gas ratio and now the unit runs rich - there is no real way to fix it at this point - you can adjust the carb but it will not probably hold the idle you desire - but then again blowers are to be ran wide open 85% of the time so don't sweat it too much on this unit but practice better maintenance and a proper mix ratio in the future.
Is the engine running at high idle or are you having to hold the throttle open to keep it running? If it stays at high idle on it's own be sure that when you push the choke back to the "off" position, check your linkages and be sure that the choke cam is returning to the low idle position, also be certain that your throttle grip operates without obstruction when returning to idle position. If you are having to hold the throttle open to keep the engine running you are probably going to find carburetor issues. Hope this help to get you looking in the right direction.
I have NEVER heard of a float sticking and causing that issue. Sounds to me like the Electronic Throttle Control (ETC) on the right handlebar isn't or wasn't adjusted. There is a thumb nut on the throttle cable coming out of the ETC switch. Loosen the screw and turn the cable in or out to get 1/16 to 1/8 inch freeplay on the thumb throttle. Too loose and it won't idle, too tight and it will pull the throttle cable tight and rev engine. It could also be a carburetor issue if it runs with choke. Either the idle screw isn't adjusted or the pilot jet is plugged. There is a large thumb screw coming off the carburetor, turning clockwise will turn the idle up. Let me know if you need anything else, Daniel.
Try cleaning your throttle body. Over time on high mileage vehicles, the throttle body butterfly valve will gunk up with sludge, and dirt. This will prevent air from entering the intake manifold while the engine is idling, causing low idle/stalling. A can of throttle body/carb cleaner will do the job. First, remove the intake tube to get to the butterfly valve. Spray a small amount of throttle body cleaner directly into the intake, and wipe any excess fluid with a cloth. Also, inspect your air filter. I hope this helps Matt
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