cylinders misfiring
 

this is a recurring problem. when the engine light comes on and i have the codes checked, it says cylinder 3,4,5 misfiring. when i start the car in the morning and after sitting at the office all day, the car runs rough with limited power. after about ten minutes of running, i turn the engine off and restart and everything is fine. i have changed plugs, cyclone valve, cleaned injectors.

thanks.

don't know