Advise on dead bike!

Discussion in 'Motorized Bicycle General Discussion' started by Matty Skacore, Jul 3, 2014.

  1. Matty Skacore

    Matty Skacore New Member

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    My bike is not getting any spark and I changed the plugs. This was not a sudden thing it started happening slowly, like it took my bike longer to start up slowly and than one day while riding she just stopped. I peddaled home and changed the plug thinking that was the problem but nope. I pedaled and nothing, not even a single spark. I took of the spark plug and kept it on the CDI to test for spark and not a single thing. Additionally I checked all wiring and the magneto and everything looks okay.
    So I was wondering if the CDI or magneto just up and die randomly (they are both stock) and just needed other opinions before I bought new parts. Thanks ahead. :-||
     

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    #1 Matty Skacore, Jul 3, 2014
    Last edited: Jul 3, 2014
  2. Davezilla

    Davezilla New Member

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    Check your magneto with an ohm meter and see if it reads between about 350 to 550 ohms... if it does, it's good, but if it reads as a dead short (0) ohms or if it don't give a reading at all it's bad and needs to be swapped out... this is very common.

    Check your spark plug boot also since these are made cheaply, an automotive wire and boot fix that problem

    The cdi can be checked with a meter and there is a post about it somewhere in here so try searching cdi test or ignition test and see if it pops up.

    My guess is that the mag coil is what went bad
     
  3. Davezilla

    Davezilla New Member

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  4. maniac57

    maniac57 Old, Fat, and still faster than you

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    I agree. Almost always the coil in a no spark.
     
  5. greaser_monkey_87

    greaser_monkey_87 New Member

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    You have to ground the plug against the head to test for spark. As a reminder, an engine needs 4 things in order to run. Compression, air, fuel, and spark. Any non-starting issue can be traced to too much or not enough of one of those 4 things.
     

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