| Sponsors
|  | | |
| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
Trouble shooting the bicycle engine that won't start
Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. I checked the park plug wire and no spark. I don't think the clutch is slipping because i can ...  | | 
03-22-2008, 04:18 PM
| | Motorized Bicycle Apprentice | | Join Date: Mar 2008
Posts: 10
| |  Re: Trouble shooting the bicycle engine that won't start
I checked the park plug wire and no spark. I don't think the clutch is slipping because i can feel the cylinder moving and the resistance, however i still find it strange that the motor whirrs when the plug is out and does the opposite when its put back in. Personallly i think its most likely an electrical problem, Is there anyway to individually test the CDI unit and the magneto? |
03-22-2008, 11:38 PM
|  | Senior Motorized Bicycle Builder | | Join Date: Mar 2008
Posts: 70
| | Re: Trouble shooting the bicycle engine that won't start
That is exactly what happened to me. When the plug was out I got spark and the engine turned over. However with the plug screwed in clutch was just loose enough to slip and not turn the engine over....tighter the clutch a little until it sounds like it is running when you peddle.
__________________   |
03-23-2008, 12:54 AM
|  | Master Motorized Bicycle Builder | | Join Date: Jan 2008 Location: north carolina
Posts: 3,747
| | Re: Trouble shooting the bicycle engine that won't start
If you have no spark on the wire when it is out of the bike you have an electrical problem. If if sparks when the plug is grounded it is something else and the clutch is a good place to start looking.
Try this before you do anything else... Unhook the kill switch. those things are notorious.. then see if you have spark. That is the easiest place to start.
then check to make sure your plug wire is making good contact with the cdi. Mine didn't at first. It it isn't either of those check your plug to be sure it isn't dead. Those are all easy to check before you go trying to figure out the cdi or magneto.
Last edited by deacon : 03-23-2008 at 12:59 AM.
|
03-23-2008, 09:20 AM
| | Motorized Bicycle Apprentice | | Join Date: Mar 2008
Posts: 10
| | Re: Trouble shooting the bicycle engine that won't start
Thanks alot everyone who helped, I've finally fixed the problem and she fired right up. After much doubt it ended up being something as simple as the clutch slipping. I tightened the flower nut and we're good to go.  |
03-23-2008, 09:49 AM
|  | MODERATOR | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 4,065
| | Re: Trouble shooting the bicycle engine that won't start
You are welcome.
__________________
If it ain't broke, and you mess with it long enough, it will be. |
03-23-2008, 09:55 AM
| | Master Motorized Bicycle Builder | | Join Date: Jan 2008 Location: north carolina
Posts: 3,747
| | Re: Trouble shooting the bicycle engine that won't start
It is almost always something simple. I can remember my problems with the kit were all my own doing for trying to be too timid with it. Seems to be a rash of those loose clutches lately. |
03-23-2008, 12:08 PM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,662
| | Re: Trouble shooting the bicycle engine that won't start
Quote:
Originally Posted by deacon  It is almost always something simple. I can remember my problems with the kit were all my own doing for trying to be too timid with it. Seems to be a rash of those loose clutches lately. | Hah - too true.....but when these simple problem kick your ass.....boy does it make one humble!
It's interesting that I can clearly feel and hear the engine turn over vs. the clutch "slipping" so I would have nailed that one right away....then someone else will walk up to my bike and say "Your wangy is discombobulated...." and I've been dinking at it for weeks!!  |
03-23-2008, 08:38 PM
|  | LORD VADER Moderator | | Join Date: Jan 2008 Location: pampa texas
Posts: 1,354
| | Re: Trouble shooting the bicycle engine that won't start
I have a wangy recombobulater if you ever need to borrow it. I can show you how to make one out of cat poo and sawdust as well and some VOODOO. Now if I could get Bob to return my chicken bones he borrowed last week. He said something about the neigbhors dog and took off with the bones and a 1/2 gal. of alcohol.
Norman |
03-23-2008, 08:46 PM
|  | Moderator | | Join Date: Jan 2008 Location: Pampa, Texas
Posts: 1,366
| | Re: Trouble shooting the bicycle engine that won't start
You gotta watch Norman when he goes to wanting to loan you his wangy recombobulator. He'll trick you. You gotta watch him all the time...........
__________________ There are only 10 kinds of people in this world. Those that understand binary and those that don't............
Become a Forever Family, it'll change your life. http://www.galtx.org/ http://bdconner.com |
03-23-2008, 08:48 PM
| | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,662
| | Re: Trouble shooting the bicycle engine that won't start
Quote:
Originally Posted by Norman I have a wangy recombobulater if you ever need to borrow it. I can show you how to make one out of cat poo and sawdust as well and some VOODOO. Now if I could get Bob to return my chicken bones he borrowed last week. He said something about the neigbhors dog and took off with the bones and a 1/2 gal. of alcohol.
Norman | Want a hammer and some lube to make it fit?   | | Thread Tools | | | | Display Modes |  Linear Mode | 
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | | All times are GMT -5. The time now is 11:08 AM. | |
|
