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  • Spark plug change on a 99 Ford Explorer with a 4.0 SOHC?

    I have the V6 SOHC, i changed the 5 out of 6 plugs and all wires, i cant seem to get that back plug on the passenger side out, notoriously bad. It was recommended to remove the air intake, dual resivoirs, and lossen the heater core? does anyone know if that will work? I dont want to do the work if it whont. by the way, ford charges close to 300 for the service, and likewise any mechanic i know, parts cost 50 so i would appreciate any help.

    7 AnswersMaintenance & Repairs1 decade ago