Someone please give me some help I have a 99 Honda Accord 4 cylinder 2.3 and I have a check engine light that says misfire cylinder 3 I have changed the plugs I have put on you wires I have put new distributor cap distributor rotor button I've changed O2 sensors I've also changed air filter changed oil I'm stumped I do not know what to do next what the car is doing is if I drive it and I hit the gas hard it will shift into a higher gear and wind up but will not change but if I hit the gas just EZ it changes really good shift just fine I'm positive it's not a transmission it is misfiring if I go on the highway and try to start the gas it'll just bog down and hesitate and I can't get it over 3 4000 RPM 80 Mile and air is as fast as it will go before it starts cutting out like it don't want to take the gas could anyone help me
and i also cleaned the throttle body
I adjusted the valves today still no fix y’all think it could be a catalytic converter

 

Just to let everybody know that I am new to this site is my first post and I would really appreciate if any one could give me some help please please please and also I posted this a week ago I’m adding to it but I replaced the map sensor and still nothing so I’m pretty sure is the Catalytic converter but maybe I’m missing something