i just purchased a 90 civic hb dx with a single cam zc engine in it for a steal. it was running really shitty, so i decieded to change oil, plugs, cap, rotor, filter, wires. after all that the car ran even more crappy.

1. weak throttle response
2. laggs and puts through out 1st n 2nd gear.
3. idle wont stay under 1k rpm after revved.

that didnt happen before i did changed all the stuff above.

please help.

thanks
henry