Took the bike out of hibernation today.

Put in new plugs. She started up fine and idle good except she was only running on the left cylinder. Pulled the plugs and the right plug was fouled with gas. Put another plug in and started her up again. Pulled left coil. Bike died. Put left coil back on started her up again. Pulled right coil and she stayed on. Swapped coils and she then only ran on the right cylinder. Pulled left spark plug and grounded the head. Crank her and no spark.

So does this mean that right coil is dead?

Could be the plug wire is loose in the coil, I had that problem.  Check both coils for resistance with multimeter to see if they are good.

Quote from: gsJack on March 15, 2009, 05:09:22 PM
Could be the plug wire is loose in the coil, I had that problem.  Check both coils for resistance with multimeter to see if they are good.

Thanks for the quick reply GSJack, I will do that. So are we pretty sure that it's a coil problem though?

Yes, it's either the coil or the plug wire connection to it.  You narrowed it down when you swapped coils and the problem moved with it.  Take the plug wire off the coil that isn't working, trim the wire a bit so you see clean wire, re-connect it, then try it.  If it still isn't working, like Jack said, verify the resistance of the coil with an ohmmeter.  Open circuit means bad coil.

Can be high floats in right carb too.
Shake the bugger well ... may get float free to move and not stuck open.
Can also be bad crank trigger and of course bad auxillary ground or the coil you have already tried, found guilty and tossed in the slammer on death row.
Cool.
Buddha.

Bike is purring and running like a champ. I decide to replace both coils. Bought some used ones from a 2004 off ebay. Got them in today and bike started up on first try and ran perfect.