Misfire when warm?

Any ideas on what are the most common causes of misfiring when warm?

Its fine while cold, but once warmed up, misfires and hesitates.

Cheers.

Would suspect Plugs / Leads if doing it when warm. Plug might be breaking down when hot and under load. Whip 'em out and check the gaps. Also see how they look.

Also worth chekcing Dizi and rotor arm for condition.

Last check would be the coil for reaking down under heat.  :wink:

Thanks,

Changed the Dizzy cap and Rotor arm, made it a little better.

Will check the plugs and Leads later today.

Cheers!