What is the best way to replace the plugs on my 99 4.6? I can't see them from the topside. Thanks

 

there under the coils. Each cylinder has its own coil. There right under the fuel rail you will see 4 black things with 2 wires and a connector going to them. Take out the bolt and pull the C.O.P. (coil on plug) out and the spark plug is under it.

 

Ok , I,ll look closer next time the hood is up. Thanks