Intermittant spark

[Pie-eyedpiper]

And before anyone jumps in, no I havn't touched the ignition barrell yet!!

Mk2. It satrted a bit reluctantly, after about 10 kicks. Ran lumpily for about 1 min, cut out and would not re-start.
Checked the plug, no spark. Changed the plug for a second hand one that I think is OK, no spark.
Changed the coil and cap for a Fleabay bought item ( I presume it works), no spark.
Fitted a new plug, couldn't see a spark. Waited until dark, saw a spark.
Turned over by hand a few more times, no spark.

Does any of this sound like a possible CDI failure?


My tale of woe started when I hit a tree on my last H & H.
It was my first proper ride of the bike after just running it in my garage.
Started first time on the line, went about 100m and died. Refused to re-start.
Turned out the plug was fouled (running rich).
Fitted new plug, started first kick and ran fine.

Later on I hit a tree, broke my clock and trapped the throttle cable. The bike was revving its nuts off and would only be stopped by stalling it, not with the switch.
It would start again but just "raced". Got it home and freed the throttle cable, thats when the above as described earlier happened.

So at the moment I have an intermittant spark. Its possible, I suppose I have damaged the wiring behind the headlight, but can see no obvious damage. I have yet to try a circuit tester on it.

Any help will be greatly appreciated.

[rich1960]

I have expereinced similar on my MK2.

Check the kill switch
Check the side stand switch - consdier removing and tripping the wiring
Check the connector block out of the ignition barrel - that was my problem - simply a loose/badly fitting connector block.

Not sure where you are, but if you're near me (Bradford) you're welcome to come round and swap parts over to test them.

Good luck

Rich

[back off road]

add where you are to your profile there are plenty of folks on here from all over the country that are willing to help

[Pie-eyedpiper]

Thanks B O R , have done that. near lincoln.

[Pie-eyedpiper]

Thanks Rich, don't have a side stand switch, but will check the barrell and kill switch.

[Pie-eyedpiper]

Well I got to the bottom of why my bike wouldn't run.
In an effort to make it run richer, I turned the air adjustmant screw out too much!
When I re-adjusted it, it started almost immedietly and runs fine.

I really don't know ifI was getting an intermittant spark or not, but I changed the plug again for a new one, and its been fine since.

I'm doing a Hare and Hounds tomorrow, so will post if there any dramatic changes.

Thanks for all your help.

[Active Rascal]

Screwing the air screw out leans the mixture... But only from idle to 1/8 throttle.