Magic Spark???

mjk123

New member
Joined
Feb 5, 2009
Messages
12
Age
44
Location
The Arctic
I have a strange problem:

2005 Yamaha 600 Triple

When idle, she is only firing on the outer two cylinders. Thinking I have a plug gone, I change the middle one but no change.

Here is where it gets interesting. If I take the cap off the plug just a little bit so that the metal is NOT touching, she fires!

So I unscrew the plug and I want to test for spark. I touch the plug on the metal bolt and nothing BUT if I lift the plug off of the bolt just a tad, TONS of spark.

WTF is going on?

Thanks!
 



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