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  1. E

    How to know if the CDI Box is Bad

    I was wondering how i know if the CDI Ignition box is bad? I Lost spark on one coil but replaced it the coil and still have nothing. any ideas?
  2. E

    No spark From left spark plug

    I have a 1980 yamaha xs400, and i was riding the other day and it stopped firing out of my left cylinder. So i replaced the spark plug and did not fix it. So then i replaced the coil and still has not fixed it. The right spark plug fires just fine. Any ideas would be great. Did not know if it...
  3. E

    Engine oil dripping out exhaust and misfiring

    My 1980 Yamaha XS400 is all of a suden blowing oil out of the exhaust. It is also misfiring in the left cylinder. Any ideas?
  4. E

    Engine oil dripping out exhaust and misfiring

    My 1980 Yamaha XS400 is all of a suden blowing oil out of the exhaust. It is also misfiring in the left cylinder. Any ideas?
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