um i think there is just one CDI unit in my bike. Which has a connection on each side for each coil .

ive spent alot of time on this, and i thought i had narrowed it down to the plug on the cdi, for my lower cylinder, but by the time i had put the petrol tank back on, the spark had gone.

It seems very intermitten. Is it safe to swap the 2 plugs on the CDi unit round, so i can narrow the problem down.

ANy ideas please.!!