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Message: [QUOTE="jaguar, post: 809944, member: 19340"] yeah, I had drained the tank and put in new fuel/oil. Also I removed the silencer but the problem persisted. I finally found out what it was. It was a combo of changing/failing ignition coil and large spark plug gap. Testing the ignition spark with the plug removed and placed snug between the radiator hose and the head, I could see that with slow engine turnover there was no spark. I had gapped it .1mm more than the suggested maximum gap since I figure the high voltage coil could handle it. Well it did for awhile. Probably the new Nology ignition coil is on the verge of failing. I’m going to leave it in for Sundays practice but carry the OEM spare with me. Now I switched plugs to a resistor type and gapped it at .7mm. Also I put a .47 ohm resistor between the CDI and the ignition coil primary in order to limit the input current to the coil. With those changes it still works OK although probably less than its capable of. And maybe it will keep it from failing. This aftermarket coil only has a .3 ohm primary. I wanted the one with a .6 ohm primary but it wasn’t in stock. The next step up is one with a 3 ohm primary. The reason my bike was only running half way good at idle is because the CDI voltage sent to the primary of the ignition coil is highest at idle and progressively lower at progressively higher rpm’s. Well, at least I can practice tomorrow although I’m all tired out from all the wrenching and pulling my hair out. No wonder there aren’t too many (percentage wise) motorcycle enthusiasts. [/QUOTE]

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