Problem with rough idle
I have a 2000 Mercury Sable with a 3.0L DOHC V6 Duratec engine. Sometimes at cold start up it run really rough and will cause the check engine light to come on. I have taken it to a parts store and they hooked up the computer to the car and it states that there is a #3 misfire. Can you please tell me which bank the #3 spark plug is located on.