Think I have a bad coil?
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Thread: Think I have a bad coil?

  1. #1
    Member Wambat's Avatar
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    Think I have a bad coil?

    I just got a 96 TW 200 for cheap as the shop could not get it to give any spark. And the owner didn't want to put any more money in it. They replaced the CDI and pick up coil (pinched the wires on the pickup coil under the side cover) . I have temporally put the old pick up coil back on and I don't get any spark that I can see, but by removing the spark plug boot and trimming the insulation back I can feel a faint spark and can just barley see one when holding the wire to the head. I suspect I have a week coil. My question is are the $11.00 ones on e-bay any good? Or should I go with a OEM from Yamaha?

  2. #2
    Senior Member rm_hm's Avatar
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    Might check the kickstand safety switch & the handlebar kill switch for problems.


  3. #3
    Member Wambat's Avatar
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    Bypassing the kickstand switch was the first thing I did. They do give problems. Haven't got to deep into the handlebar switch yet but seems to be working OK. I will probably bypass it also. Figured since I was getting a little spark it was OK for now. Just really wondering about those E-bay coils and if I should take a chance on one.

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  5. #4
    Senior Member scotti158's Avatar
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    Download a copy of the TW200 manual, it shows how to test all the ignition components. Here is a post that has the links. Post
    2013 Yamaha TW200

    1996 Yamaha TW200

    1995 Kawasaki KLR650

    2002 Yamaha RoadStar 1600 with sidecar

  6. #5
    Senior Member elime's Avatar
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    I took my coil to the dealer and he tested it. $5 if the coil is good, free if I buy a new coil. The coil tested good.

    Where are you located?
    littletommy likes this.
    Long live the internal combustion engine!

  7. #6
    Senior Member Dell's Avatar
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    Are you getting battery drain- down, as in a short, and if so, always or only key-on? This is a really basic place to start. You do need a Volt- Ohm meter, but 4-12$ is better than most any trip to a dealer. For example, the coil testing specs are in the manual. -Dell

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