The spark plugs in your Ford vehicle might be small, but they play a big role in your ignition system. The ignition system is what is responsible for helping to get your car started when you put the key in the starter. The spark plugs are just one of part of the system that you should be checking on a regular basis to make sure they are in good condition. The spark plugs are located in the cylinder heads of your vehicle and are responsible for converting electricity into a spark that can ignite the air and fuel mixture inside your combustion chambers. The ignition of this mixture is what allows your car to start properly. It's important to regulate the ignition system and check the condition of your spark plugs often to make sure they're working well. There are many symptoms you can look out for that might indicate a problem with the spark plugs. Any issues with starting your vehicle should point you in the direction of an ignition system problem. Make sure to invest in OEM spark plugs for your car here at Ford Parts America.