spark or timing issues

What's up guys. I was ripping on my 78 maxi luxe....kitted, exhaust, 20mm mikuni... Yesterday the boot kept falling off the spark plug, so we replace the boot, it was warn out. It starts, but it as I accelerate, it seems to cut on and off. Very jerky and not smooth. It was doing this with both boots. It was perfect until yesterday. Any suggestions?

Re: spark or timing issues

If you ran for considerable time with the boot falling off then it would carbon up the points quite badly...

CDIs really do not like to have to put the voltage spike back through the box either.

Re: spark or timing issues

engine spinning with disconnected plug =burnt cdi box

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