Hesitation...

Hi all,
After a long run today my Zed has started hesitating alot, ive checked the sparks plugs and they are fine, Recently had HGF so the majority of stuff has been replaced and filled up, so my mind has come to a blank.
It only does it when under load, mainly low revs...
any help would be appreciated
P.S its a 1.4 105, with 59k on it
Thanks

checked for vac leaks? other than that map sensor or lambda sensor plugs been checked?

I thought that if it had an issue with one of the sensors it would turn on the engine managment light?
no i havent checked for vaccum leaks, ill have a look!
thanks mate

Should do but doesn't always, vac hose leak always a good place to start though

idle control? when does it do it? all through the rev range or just at certain revs?

she is fine idling bee, its only low revs so from 1k to 3k and it only misses if its under load.

check the HT leads are in good condition not cracked ect. if you look in the dark you might see them arking

problem sorted!!
one of the rubber hoses that comes from the coil pack to the spark plugs had split and it was arching off the head, put some insulation tape round it and its running well now.
thanks for the help!