Ugh, need help. Motor not starting....again.

Discussion in 'Motorized Bicycle Trouble Shooting' started by xXNightRiderXx, Sep 23, 2017.

  1. xXNightRiderXx

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    So, I decided to put a 12v gen for lights, an expansion chamber, a boost bottle, and I replaced my magneto because I was getting intermittent spark. Now, the damn thing won't start. I've tried choking it, leaving the choke down, pinching the boost bottle tube, reinstalling the stock pipe, and none of these worked. I haven't tried removing the gen or changing mixture yet. Any suggestions other than those two possibilities?
     
  2. crassius

    crassius Well-Known Member

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    magneto rarely gives intermittent spark, might be bad CDI

    adding gen might leave mag with bad connection (that's if it is on right side up in first place)

    boost bottle can give air leak (those bottles seem useless anyway)
     
  3. xXNightRiderXx

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    When I replaced the magneto, I tested the spark and it is strong and consistent. I'm not entirely sure which way the gen is supposed to go, and I may need some plumbers tape to seal the threads for the boost bottle hose nipple. I'll tape over the hole I had to drill and tap, and try it that way. Is the gen supposed to go on with the plates on top of or underneath the magneto?
     
  4. crassius

    crassius Well-Known Member

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    never had one come into the shop, so don't know much about them

    since they bolt to armature of the ignition coil, I'd try starting it with that removed just to see if that helps
     
  5. xXNightRiderXx

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    I plan on that. If it starts, then I can make sure it is running right, then attach the gen under the magneto. I currently have it on top.
     

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