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1980 GS850 here. 17k miles. The problem is that cylinders 1 and 4 fire great, but 2 and 3 do not. The bike runs but has a ton of trouble idling and sounds bad, as two cylinders arent really doing their thing.
Naturally, I changed the spark plugs. No change. Then, I figured the coil was faulty. I replaced it with a used original, and the problem was unchanged.
Next, I figured it might be a problem with the ignition. So, I replaced the Pick up coil. This also caused no change.
Context: The bike ran perfectly well last summer. I winterized it, put it away, and now this. So something happened while it was stored away.
Now I'm confused. I took the coil that was giving fine spark and hooked it up where the other coil was, and it did not get spark, suggesting that the original coil I replaced wasn't actually faulty. My thoughts? Something with the wiring must be bad. Maybe a short? What do you think? I have not replaced the spark plug hats. thats probably my next one to try.
Naturally, I changed the spark plugs. No change. Then, I figured the coil was faulty. I replaced it with a used original, and the problem was unchanged.
Next, I figured it might be a problem with the ignition. So, I replaced the Pick up coil. This also caused no change.
Context: The bike ran perfectly well last summer. I winterized it, put it away, and now this. So something happened while it was stored away.
Now I'm confused. I took the coil that was giving fine spark and hooked it up where the other coil was, and it did not get spark, suggesting that the original coil I replaced wasn't actually faulty. My thoughts? Something with the wiring must be bad. Maybe a short? What do you think? I have not replaced the spark plug hats. thats probably my next one to try.
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