Spark plug dies in under a minute nc35

[westie]

I have an nc35 400 1994

Why is my spark plug shitting itself within a minute of riding.
The coils seem to be fine as I tried some others and it still happened
I have two engines and it happened in both of them the same but I used the same electrical system.

Any one else had the same problem?

edit. The plug dies completely(no spark at all) but then comes back to life sometimes with no consistency.

[XRKID]

Give more info into "shitting itself" Could possibly be the cdi.

[westie]

Well in a drunkish state trying to get the bike out i dropped it and then it ran real good for a bit. But the one plug dyded again.

When doing a spark test, ie pulling out plug and resting it on the rocker cover and turing the bike over, it will either not spark or spark but look like a thunder storm. It seems as if there is the main spark and then some other sparks off that. Could be nothing to do with the prob but funny to watch.

[Disco Dan]

Hit it with a hammer.

Bit of tape round it mate and shove it back in

[westie]

Hit it with a hammer.

Bit of tape round it mate and shove it back in

Dropping it was soo much easier. But then the reality of having to pick it up set in.

[westie]

Wow.

My amazement to find a loose negative cable to the frame. Just its looseness caused this to happen to the one plug.

I still dont get it tho the same happened on the other bike.....

edit. Replaced new spark plugs and rode the bike to taupo and back no worries no power loss.