2004 Infiniti G35 Repair cost

Hello I have attached a rough estimate. Your best bet is to shop around at several reputable repair shops. If you are doing it yourself obviously you will save labor. It is possible that the misfire is due to the plugs etc. If you havent had a good tune up on the car lately, you need one. I have attached the service data chart about 105K you need to change your plugs and wires. Looks like you may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.