Help needed from a new we

Thanks in advance for any help given
Here goes got a jimny 2000reg with 60000 on clock the problem I have is it seems that when you put your foot down to go it don't but if you do it slowly it will pick up and go also power less going up small inclines it ticks over fine and if you rev it up into the red it misses bad no engine light shows but is working any help would be deeply appreciated thank you bob ps forgot to menshion it's had a new cam sensor a year ago thanks

It might be the clutch slipping so you might need to adjusting it .
And the red line is there so you don't over rev the engine.

Clutch is new defo not that it's not over reving it's just got no power with your foot down thank you anyway bob

The usual suspect is a blocked up catalyst.
A new one is quite expensive though.

if you rev it in to the red and its missing id say your hitting the rev limiter

Just been on fleabay there's a new cat for125 will try that thanks bob