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78 650 dropping 2 cylinders
- brademan76
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Thanks for your any recommendations!
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- Patton
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Could be an issue with spark quality (for whatever reason), or compression (valve clearances), or fuel mixture, or any combination of these.brademan76 wrote: While riding, 2 cylinders will randomly stop firing. Sometimes I can ride it out and they will just randomly kick back in... other times I'll have to shut down and restart, but even then it doesn't always start on all 4. I'm running pods and a 4-1 exhaust. Any ideas as to the cause? Does it sound more like a carb issue, or electrical? Thanks for your any recommendations!
To begin diagnosis --
Would perform the clear tube test on each carb;
Would remove the plugs and examine spark quality, looking for fat blue sparks;
Would assure valve clearances being within specs.
Good Fortune!
1973 Z1
KZ900 LTD
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- brademan76
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- MFolks
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1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- brademan76
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I swapped the coils and was still only firing on 1-4, so that tells me its not the coils. I pulled out plug 3 and fired the bike up and wasn't getting a spark at all. Could the dynatek unit itself be going bad or maybe its the wiring from the ignition system to the coil. I suppose I can check that with an ohmeter.
Thanks for the help.
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- brademan76
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www.kzrider.com/forum/2-engine/463907-kz...from-dyna-s-ignition
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