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I have a 1979 yamaha xt500 and i lost power to the ign coil. its a brand new coil, sparkplug. i think its in the wiring harness cause i was messing with my lights and was moving things around and got power back and when i put the bike back together i lost power again. the bike ran great and just died on me and almost ended me in the middle of an intersection when it died
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I have ridden an XT500 on Green Lanes in the UK. Great old thumper!
You will probably find there is a small overflow hose from the float bowl of the carburetor. The float valve is sticking. Remove the carb and clean all the jets, especially the one in the bottom float bowl.
If I remember it shouldn't have points, when you had the carbs off did you unplug any of the harness, I beleive coils 1-4 and 2-3 are powered by the same source. also there should be a pick-up coil it's down on the stator. As for the fuel issuedid you have a bad needle and seat or something holding it slightly open causing it to over fuel/ rev up.
If you mean no output power, coil is bad. If you mean no input power 12v, there is a fault in the wiring. If you mean no signal from stator, wiring problem as well
hi is this a point less ignition or electronic? check that your ground wire from ign. coil is not grounded causing no start.( last ign coil shot) good luck.
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