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weak spark

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neat street:
I All, I am having problems in starting my CB750F1, the spark seems weak? I have changed the coils, points, condenser's, plugs and caps, it does coke up a little as well, and after setting the timing and carb settings, the only thing left was the weak spark which would cause both issues. anyone got any ideas please?
many thanks, John

hairygit:
Have you tried bypassing the handlebar kill switch, it's not unknown for these to become dirty/corroded inside and cause starting/running problems?

UK Pete:

--- Quote from: hairygit on June 27, 2014, 02:24:17 PM ---Have you tried bypassing the handlebar kill switch, it's not unknown for these to become dirty/corroded inside and cause starting/running problems?

--- End quote ---

+1 on that, also clean all earth contacts
pete

neat street:
Thanks for the tips, but switches were stripped, cleaned, painted and rebuilt, all earth connections checked when the bike was rebuilt a couple of months ago, I am baffled??? its a pain to start, but when it starts (a few misfires), it drives like a dream, but after stopping for a couple of hours, same problem of not wanting to start again... check plugs, and light coking, check spark and its weak??? starting from hot, perfect!
Many thanks, and hopefully some more tips would be appreciated.
John

JamesH:
Have you done a compression test cold / hot john? Valve clearances all spot on?

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