- Jan 18, 2019
I have a 1997 KX 500 that I just purchased, thinking it would be pretty kick ass. My 9 yr old's YZ-80 kicks it's ass. Never been on such a gutless KX. Compression is strong, fuel system has been cleaned. Running stock exhaust. I'm not a carb expert, so I had the shop I usually use go through the carb, check jetting, etc. Just runs completely flat, no power band, really no power at all. Engine sounds good. Power valve seems good. Any ideas? The guys at the shop say maybe reeds, but not sure that would cause it to be that bad. Not even exaggerating, it literally gets out-run by my 9 yr old's YZ-80.