Now the engine is cold......it starts up fine, so I can't test anything!

 

Hit the cam chest with some heat. Hair drier or heat gun.

Just to see what happens.

 

If that doesn't kill it, do the same to the coil.

 

Just to be clear if it dies you found your bad part.

 

Thanks for the suggestions.

 

Thought I had cured the problem today....... but did a 15 mile trip, no problems......started it several times while hot.....no problems.....several hours later tried another trip and got 200 yards down the road then died.

Bit more history.....

I haven't done the electrical tests yet.....but got hold of a good ignition module tried and no change.

Tried starting the bike cold.....then put some heat on the cam sensor and it wouldn't start.
Assumed that this was the problem and fitted a new one. Then the above happened!

Whilst it is still not starting, I checked and no spark at plugs.

Battery reads about 12.7 volts and is turning the engine easily.

I also checked to see if there was power on the coil whilst ignition was on.....there was about 11.4 volts on each.

Is this likely to be the coil then?

 

When I had this same issue it turned out to be the ignition module. If you can borrow one from a good running bike and replace yours, odds are good it'll point out to you yours is an intermittently bad.

Good time to upgrade to a Dyna or Crane ignition module.

 

Thanks for the thought, but as I said in my last comment.....got hold of a good module and have fitted that.....no change.

 

Happened to me once, just like that. Bad relay under the right side cover of Tour Glide.

 

Ahhhh! This is so frustrating!

Left the bike last night on a cold engine with no spark at the plugs.
Thought that I'd go out there today and be able to work it out......nothing touched....no wires moved.......and there's sparks and she starts up fine!