Q: How Do You Check and Replace Spark Plug Wires, Distributor Cap and Distributor Rotor on Toyota 4Runner,Toyota T100 and Toyota Tacoma?
A: Check Spark Plug wires when installing new plugs. If arcing is seen, replace the wires. Clean the wire and check for damage. If new wires are needed, buy a set for your engine model and replace them individually. Check the distributor cap and rotor for cracks and worn contacts. Replace if damaged. If reusing the old cap, check the resistance between the wires and the cap.