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lost cylinder spark

466 Views 3 Replies 4 Participants Last post by  Hatchetman
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does anyone have any idea on how to fix my problem ?

lost spark on the front cylinder. i"m baffled
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you might just have a bad plug wire or cap.
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I had an 83 500 shadow and it had 2 coils and 2 plugs per cylinder, don't know if the 85 is the same. If so you could try switching the wiring on the coils and see if it is the coil or something else.
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Check for 12 volt input power to the coil. If power is going in & you have proper ground, all that the coil waits for as it builds up more power is the abuility to jump to ground into your spark plug. so if power & ground are supplied, than the problem is on the dump side, no availabuility to discharge into the plug.

Does that bike rely on a crank sensor or any other computer related part to tell it when to fire???
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