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one bad coil

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Guest

Guest
My mate has an 82 gs 400 that will only spark on one coil. We replaced it with a known good coil & still no spark. We changed the yellow/red orange wires right to left & changed the spark from right to left. Could it be a bad ignitor or some other issue?
 
I think my question is this. Can the ignitor only be powering one coil & therefore be faulty?
 
nastyjones said:
I think my question is this. Can the ignitor only be powering one coil & therefore be faulty?
Click to expand...
Sure, but maybe the wiring between the signal coils and the ignitor is faulty and there's no trigger signal on that coil side.
 
I followed all the wiring carefully & it seems intact, that's why I suspect the ignitor. What I don't know is whether they can go half bad, meaning only firing one coil. When the ignitor fails are both coils dead?
 
Yes you can loose just one cylinder. I would take the igniter apart and see if it is repairable ?? some are sealed so that eliminates that option.. MAKE sure to check the charging circuit as it will contribute to igniter failure. There has been a rash of twin igniters going bad over the last few years ..
 
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