Newbie here. New rider and totally new bike to me. I have a 1990 Kawasaki Zx6. Its has/ has had a running problem under load. Super surgey/ stumbly. Case point if you're running up a hill at under 4k and you try to roll on the throttle it will just bog underload. Today after a run it wouldn't restart. Basically it would crank slow. It has a new battery and obviously it wouldn't charge. I've heard that could possibly be a rectifier? I'm going to buy a manual but i'm just trying to figure out what could be the problem.
It's had a new spark plug cap. I wouldn't be surprised if it needs to be rejetted/ carb serviced since now its above sea level. However now its obviously not charging.
Any ideas? I'll try to add any more pertinant info if it helps or if I have forgotten something.
1990 Kawasaki Ninja Zx6