ok i picked up a hatch from the police auction and the water pump seized breaking the timing belt. i replaced them both and for some reason the car bogs out at 4k rpms. i replaced the plugs wires cap rotor and the fuel filter. could this be a bad head? i even used a dizzy from a perfectly running car and i still got the same problem. what could this be? i am confused!!!!!

 

broken timing belt is bad news... bent valves maybe.

 

could valves really be bent? it sounds fine!

 

Try replacing the temp sensor.. The civic will go into fail safe mode and will not go past a certain rpm if it is bad....