Keeps mis-firing on cylinder #3 check engine light flashes and stays on car chugs on uphill slopes

First, check the spark plug and wire going to the number 3 cylinder on the engine( # 3 cyl. is the one by the firewall, on the driver side of vehicle).If plug looks ok, make sure you get good spark at the end of the wire where it hooks up to the spark plug. If no spark, check the wire for cracks, breakache , etc. Make sure wire is in good conditions. If still no spark at the # 3 cylinder wire, check the ignition coil. Do, by disconnecting wire at ignition coil and with car running place a screwdriver at ignition coil and make sure there is good spark. If no spark comes out, replace ignition coil. If problem still continiues after making sure plug, wire and ignition coil are ok, check cyl. compression and fuel injector for proper fuel delivery. Simply, by replacing the plugs and wires may solve your complaint but you still need to check the car to be certain you don't waste your money by guessing and replacing unneeded parts.

Check plugs wires for damage or just replace if you have replaced the #3 plug already if not replace it also