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Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance.

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  #1  
Old 09-27-2009, 11:19 AM
dirtybird dirtybird is offline
Motorized Bicycle Newbie
 
Join Date: Aug 2009
Location: asheville
Posts: 7
Default bad throttle?? Help

I posted about this problem yesterday (I have a runaway throttle). It does nothing when put together (no adjustment when turned),I have adjusted the damn thing everyway to sunday..it appears to move up and down when you twist the grip when dissassembled..so what gives? I am making sure the pin is going into the hole at bottom too.. It also goes off the charts when you disengage the clutch, so much that I fear blowing the engine. It also is shooting some gas/oil out the exhaust manifold and dripping out the muffler. I am perplexed and pissed. HELP.
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  #2  
Old 09-27-2009, 11:44 AM
bseelbach bseelbach is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2009
Location: Farmington, MI
Posts: 136
Default Re: bad throttle?? Help

It sound like you already checked that the slide is correct. Confirm by pulling off the carb and as you (or a helper) twist the throttle, look through the intake and you will see the slide move. If not make sure the small locater pin in lined up with the slot. It will go assemble wrong but not work properly and give you the open throttle at all times.

2nd check the idle screw- it may be too far in. Tighten until snug and back off 3.5-4 turns. Tighter is higher idle and loose is lower idle. Don't loosen too much or the screw will vibrate out.

3rd check for kinks.

4th make sure that the adjustment screw on the top of the carb is screwed in. Only use it if you need to take up slack.
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Old 09-27-2009, 01:54 PM
dirtybird dirtybird is offline
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Join Date: Aug 2009
Location: asheville
Posts: 7
Default Re: bad throttle?? Help

That was it. The slide was not going all the way into the intake because it wasnt properly seated down the groove. Thank you VERY much! I am going for a test run!
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