bogging out with open throttle

85 vf1000 is bogging out almost like a misfire at open throttle any ideas?

Can you give us a little more detail,firstly is the bike in standard trim?
You say it’s bogging down with an open throttle,is this on load or off load?
Is the bike warmed up and off choke when this happens?
You have had problems with your HT leads,are they all properly connected at both ends now?
What rpm is it showing when the problem happens?
Regards Bif

I had this before turned out fuel pump wasn’t working so not getting enough fuel.