Re: how to test ignition coil

steve /
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im having a very similiar issue. cimatti city bike. no spark at all. figured it could be my tail/brake bulb. it looked ok, but i took it out and put wire over the leads to make sure there was connection. still no spark. so i took off the plug boot to see if that was faulty. i shaved the end of the wire down to the copper and grabbed hold of it, and spun the flywheel. it shocked me. so i ran out, got a new plug boot, and it didnt do anything. i even wrapped the copper wire directly around the metal tip of the spark plug, and nothing. the MOST i could get was maybe a spark every now and then when i held the bare copper to the cylinder. maybe the plug wire is bad. i dunno

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