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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 09-08-2010, 07:06 PM
jKellym jKellym is offline
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Default Help needed - Won't start

Hey everyone, I could really use some help. I have a new DAX 2-stroke that has decided to quit on me. I ran it for almost 2 full tanks, had some issues getting it to idle properly and finally got that straightened out. Rode it to work about a week and a 1/2 ago and because it was idling correctly I had to use the kill switch to turn it off. This was about a 4.5 mile ride. Went to start it that afternoon and it wouldn't fire.

I have swapped plugs and plug wires, new magnet and new CDI. I also have disconnected the kill switch. I am definitely getting spark. I spoke with Duane and he recommended I put a little of my pre-mix in the spark plug hole, replace the spark plug and see if it will fire up for a second. This did not work. I am at a complete loss of what to do next. Thanks in advance.

Kelly
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  #2  
Old 09-08-2010, 07:09 PM
Bikeguy Joe's Avatar
Bikeguy Joe Bikeguy Joe is offline
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Default Re: Help needed - Won't start

Have you checked to be sure your magneto hasn't slipped out of time?

Just a wild guess.
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Old 09-08-2010, 07:18 PM
jKellym jKellym is offline
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Default Re: Help needed - Won't start

I'm not even sure what that means. I had never messed with a motor before this project. I have though, been lurking here and reading everything I could to understand what was going on. The only thing a quick search on magneto timing told me was to make sure I put it in with the right side out. I am going to go flip it now.
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Old 09-08-2010, 07:25 PM
PR3C150N PR3C150N is offline
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Join Date: Aug 2010
Location: NSW
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Default Re: Help needed - Won't start

have you got everything wired up? once i had my wires not connected properly and it was still had a spark but not firing. Do you have compression? are you getting fuel ? clean your carby out? just a couple of guesses. how did it stop? just died?
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Old 09-08-2010, 07:31 PM
jKellym jKellym is offline
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Default Re: Help needed - Won't start

Everything is wired correctly. I have compression, just not sure how much I should have. I can feel it sucking in when I put my thumb over the spark plug hole. I killed it with the kill switch to park it at work and it hasn't started back up since.

Reversing the magneto didn't work.
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  #6  
Old 09-08-2010, 07:33 PM
PR3C150N PR3C150N is offline
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Default Re: Help needed - Won't start

earth the kill switch wire out with some tape so it doesn’t short out with the frame. so it has been working with your new magnet ?
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  #7  
Old 09-08-2010, 07:44 PM
jKellym jKellym is offline
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Default Re: Help needed - Won't start

Kill switch is not hooked up. I won't be using it anymore.
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Old 09-08-2010, 07:45 PM
Nougat Nougat is offline
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Default Re: Help needed - Won't start

If you're using the quick connectors between the CDI and mag, crimp them hard with pliers, or remove, twist, solder.
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Old 09-08-2010, 07:53 PM
jKellym jKellym is offline
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Default Re: Help needed - Won't start

Just tried that Nougat, no luck.
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  #10  
Old 09-08-2010, 09:46 PM
jKellym jKellym is offline
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Default Re: Help needed - Won't start

I took the head off. So, is the cylinder supposed to be black? It seems to be moving up and down easily.
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