Q: How to remove and install ignition coils on a Ford Excursion?
A: Disconnect the cable(s) from the negative battery terminal(s). Disconnect the ignition coil electrical connector(s) from each individual coil. Use tape and mark each electrical connector with the correct cylinder number to prevent mix-ups during reassembly, if necessary. Remove the bolt securing the ignition coil, then pull the coil from the cylinder head. Note: 2006 and later models have individual coils for each spark plug. The coils are mounted to the top of the valve covers. Installation is the reverse of the removal procedure with the following additions: Prior to installing the coil, coat the entire interior of the rubber boot with silicone dielectric compound. Connect each coil electrical connector to its correct coil and make sure they are tight and secure.