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| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
one minute running fine, the next...
Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. 49 slanthead. running fine for about the first half mile. Suddenly quits and won't start again. Pretty sure it'...  | 
08-21-2008, 06:59 PM
| | Master Motorized Bicycle Builder | | Join Date: Jul 2008
Posts: 101
| |  one minute running fine, the next...
49 slanthead. running fine for about the first half mile. Suddenly quits and won't start again. Pretty sure it's not a fuel problem. All wires are connected correctly and secure. What would be suddenly causing no spark? |
08-21-2008, 08:36 PM
| | Master Motorized Bicycle Builder | | Join Date: May 2008 Location: north bend wa.
Posts: 355
| | Re: one minute running fine, the next...
kill switch |
08-21-2008, 08:58 PM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,708
| | Re: one minute running fine, the next...
open magneto or bad CDI |
08-21-2008, 09:10 PM
| | Master Motorized Bicycle Builder | | Join Date: Jul 2008
Posts: 101
| | Re: one minute running fine, the next...
Both good suggestions, but as it turns out...
The spark plug gap was completely bridged, plugged with sludge from the rich break in mixture. Cleaned plug, starts right up. |
08-21-2008, 09:19 PM
| | Master Motorized Bicycle Builder | | Join Date: May 2008 Location: north bend wa.
Posts: 355
| | Re: one minute running fine, the next...
you lucky devil |
08-22-2008, 02:04 PM
|  | Moderator | | Join Date: Mar 2008 Location: Tucson,Arizona
Posts: 2,600
| | Re: one minute running fine, the next...
Quote:
Originally Posted by brucemg51  Both good suggestions, but as it turns out...
The spark plug gap was completely bridged, plugged with sludge from the rich break in mixture. Cleaned plug, starts right up. | Good to hear it was only a fouled plug  |
08-23-2008, 07:36 AM
|  | MODERATOR | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 4,245
| | Re: one minute running fine, the next...
WOW! That must have been some break-in mixture! Imagine what it's doing to your rings and exhaust baffle!
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