Why are the spark plugs on my Ford Ranger not working?
Why are the spark plugs on my Ford Ranger not working? Spark Plugs – One of the absolute most common causes (if not the most common reason that your Ranger may be misfiring) is the spark plugs. Although most modern vehicles use iridium spark plugs, they still need to be changed at the manufacturers recommended interval. What causes the p0304 trouble code on a Ford Ranger? There are quite a few things that can cause the P0304 trouble code to trigger the Ford Ranger. Here are the most common problems that will throw the code. They are presented somewhat in...