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Discussion Starter · #1 ·
I am firing up my 84 GL1200 from its winter rest and the right side has no spark. Pipes are ice cold and plugs are wet. I started to pull it apart to check coils etc and I got rained out.

The strange part was while it was running I pulled the left rear boot (not sure why I did it but) just as the boot is at the tip of the plug, I hear arching and the RPMs run up.

Slide the boot further down towards seated and it slows or stalls and if I pull it further off the plug it also slows are stalls. Doesn't seem to be the wires themselves as moving them makes no difference. I am assuming not a weak coil either but I am lost on what could cause this.

If I could leave the cap laying there at the spot I could ride it :) but that is not practical.

Any thoughts?
 

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Junior Grue
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8,153 Posts
When you pull the cap off slightly you're increasing the voltage to jump that gap and getting a hotter spark.

Sorry to say but if your seeing wet plugs you'll have to dig into your carburetors to see why your getting to much fuel in those cylinders.
 

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If you remove one plug wire from good running 1200, it will not die.
I think you're left side is doing all the work, and the right is loafing.
+3 carbs.
 

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It aint rocket science
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When you pull the cap off slightly you're increasing the voltage to jump that gap and getting a hotter spark.
+1

Classic symptom of a fouled plug. When they get that bad it needs a sand blast clean or replacement, usually.:coollep:
 

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Discussion Starter · #7 ·
I will have a look at the carbs when the rain stops. Thanks for the direction to start looking in :)
 
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