92 KX 80/100 running poorly

[YZ250man]

I have a 92 KX 80 with an EG supplied KX100 jug. The power of this bike was never that great, but it is much worse now.

It appears to be missing, cracking up starting at mid range and like it is trying to 'catch up', but sputters and cracks up. Will idle fine. Plug looks good (if fouled, I would suspect electrics(?)).

What do I look at?

 

[DMATT125]

yz250man, start simple. try cleaning the carb and checking the reeds for damage.also make sure the air filter is clean. good luck

 

[Twisted-Grip]

your bike might be running too rich