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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. |
carb problem
Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Trouble Shooting forum. put a new carb on my ch80 it will run but when i let off on the gas the motor ...  | 
10-05-2008, 09:16 PM
| | Motorized Bicycle Apprentice | | Join Date: Jul 2008
Posts: 6
| |  carb problem
put a new carb on my ch80 it will run but when i let off on the gas the motor dies tryed the idol screw with no luck have the crab set on the second notch which is what we are suppose to run them here in thunder bay any help would be great thanks |
10-05-2008, 11:50 PM
|  | Master Motorized Bicycle Builder | | Join Date: Jan 2008 Location: north carolina
Posts: 3,844
| |  Re: carb problem
Check for air leaks they are the most often stated carb problem here. |
10-06-2008, 09:34 AM
|  | MODERATOR | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 4,245
| | Re: carb problem
Also, sometimes the idle screw just won't turn the idle up enough, in which case you can use the adjuster at the top of the carb. Unscrew it just until you get a satifactory idle.
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If it ain't broke, and you mess with it long enough, it will be. |
10-06-2008, 09:35 AM
| | MODERATOR | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 4,245
| | Re: carb problem
Then, re-lock the locking nut.
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If it ain't broke, and you mess with it long enough, it will be. |
10-11-2008, 11:41 PM
|  | Master Motorized Bicycle Builder | | Join Date: Jul 2008 Location: North California Coast
Posts: 139
| | Re: carb problem
Quote:
Originally Posted by computergod2001  put a new carb on my ch80 it will run but when i let off on the gas the motor dies tryed the idol screw with no luck have the crab set on the second notch which is what we are suppose to run them here in thunder bay any help would be great thanks | The last time this same problem happened to me the brass tube that the jet is screwed onto in the middle of the donut float vibrated loose. When I removed the carb bowl that brass tube fell out. Screwed it back in and all was well. |
10-12-2008, 12:07 AM
|  | Master Motorized Bicycle Builder | | Join Date: May 2008 Location: Corpus Christi, Texas
Posts: 677
| | Re: carb problem
Wild guess, I saw a Honda Sabre v 45 with that problem. Take the idle needle out, and look for debris from cutting the threads for the screw. A tiny piece of metal is all it takes.
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10-12-2008, 11:23 AM
| | Motorized Bicycle Apprentice | | Join Date: Jul 2008
Posts: 6
| | Re: carb problem
thanks to everyone it turn out to be a air leak on the main screw that holds the carb on never tighten up enough so thank for everyones help |
10-12-2008, 04:30 PM
| | Master Motorized Bicycle Builder | | Join Date: May 2008 Location: Corpus Christi, Texas
Posts: 677
| | Re: carb problem
A single ant can not move a leaf, but a hundred can! This forum is all about helping each other. It is my honor to help some one else if I can. Every one here feels the same way.
Now go riding and tell us about it  Ride safe 
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