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My ignition is not firing to the back cylinder. I have replaced the coil. Spark is good to front cylinder so the bike will run on this cylinder. Wiring looks good, tried new plug wire. Hooked hot test light to coil primary on rear cylinder and light blinks. Thanks in advance for any help.
 

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Might try a new plug. Just fixed a bike for a friend yesterday with the same sympton and that was the fix. Swap 'em first and see if the problem goes to the working cylinder.

Sometimes it is that simple..... Ken
 

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Try the new rear spark plug, if that doesn't work leave the plug in the wire and ground the plug to the head and crank the engine over to check if the plug is firing.
Does the Compufire timing led flash when cranking the engine over ?
Did you replace the coil with a single fire or dual fire unit ?
 
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