1991 ZXR250 hesitating at 14,000 rpm

[Darealsytfromdagheto]

Multimeter. I'd check voltage.
Usually a cheap 12v led will have a resistor on it and is the right resistance to sort the issue, so chop that wire and put the led from the cdi to ground.
Has worked for me several times.

Awesome bro i'll try that, thanks for your help

[ducatilover]

All good. Hope it sorts it

[F5 Dave]

Sometimes an engine just won't rev that high on its own accord- so the answer is simple. You'll just have to force it.

Mechanical advantage means you can show it who is boss. It might overlock the gears for a while, but try shifting to 2nd from about 90 (ideally on a wet road, so if it does lock you don't waste too much rear tyre) & that should scare it into submission.

[Grasshopperus]

I used to have a zxr250a and had the same problem. Turned out that a previous owner had installed carb jets one size larger than the factory specifications. I replaced them all with the proper-sized jets and the hesitation went away.