Originally Posted by Bones
it is coil on plug. How hard are the plugs to change on the 4.6L? they look like the coil on plug sits directly under the fuel rail. Do I have to remove the fuel rail to change em?
You can get the coils out without moving the rail, it's not a bad job at all. You may have a coil starting to fail though and replacing just plugs may not fix it. If the boots on the coils are really soft and expanded you can buy those separate from the coils, Auto value or napa should carry them.