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

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Old 12-16-2016, 05:23 PM
BlazeAZ314 BlazeAZ314 is offline
Motorized Bicycle Newbie
Join Date: Dec 2016
Location: AZ
Posts: 3
Default New Intake/Stuck throttle

Hello, I recently installed a new extended air intake pipe and now when i pull in the clutch, it goes full throttle.

So when im sitting still the engine revs all the way up.
Can someone tell me why this is happening?
Its just a 2in pipe intake. If pics will help let me know and ill upload some.
Thanks for any input you have.
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Old 12-16-2016, 11:46 PM
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Kioshk Kioshk is offline
Motorized Bicycle Elite Member
Join Date: Oct 2012
Location: Connecticut
Posts: 1,134
Default Re: New Intake/Stuck throttle

Yep; please upload pics.
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Old 12-23-2016, 12:40 PM
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ZipTie ZipTie is offline
Motorized Bicycle Elite Member
Join Date: Jan 2016
Location: Mpls Mn
Posts: 636
Default Re: New Intake/Stuck throttle

A few thoughts ...Your carb is probably at the wrong angle causing float to stick and is flooding a bit, the angle on these extended intakes is also all wrong. Also the carb slide may have gotten misaligned on idle screw from messing with the carb and is sticking. Or lastly you have an air leak. These extended intakes are welded up really bad, I've found as many as 3 pin holes per intake from bad welds per intake. Seems they are all welded by a 5 year old. At any rate something changed. With float, cable, leaks, flooding, gasket, idle screw adjustment...or all of the above. Yep, Picts always help

"One pull and It's on, one snip and its off"
“Lets not get too technical”
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