Hi guys, I thought I'd post this as it happened to me so it kinda follows you could all fall victim to this problem.
Last week I was out for a ride, enjoying the sun when my bike just died, no warning, no misfire, just stopped. A fellow biker stopped to try help me sus out what the problem was. we checked the fuel 3/4 of a tank, we checked the electrics all working, still nothing. Eventually I had to call for the big truck with flashing lights! He took out the plug, perfect. Checked for a spark, no problem, still the beast refused to start or even fire!. At this point I was praying to the god of cdi that it wasn't failing..
Eventually we had all the plastics off and started to check the wires. It was then that the repair guy found a four way socket (4 in, 4 out) in (what he later admitted was) desperation he yanked it apart; all of the contacts were covered in green gunk (verdigris he called it). We cleaned them and sprayed a good dose of wd40 into the socket then tie wrapped it back together. She fired up first kick and ran like a top.
Then this morning, exactly the same thing happened again, I went through the motions and she started and ran perfect again. Needles to say, I've since been on a 'ahem' famous auction site and ordered a new socket so hopefully this will end this problem for good.
I guess what I'm saying here folks is, don't just look at the obvious, one bad earth or bad connection, and you ain't going nowhere!
Hope this helps out a few!!
Hardly