Q: How to inspect spark plug wires,Distributor Cap and Distributor Rotor in Jeep Wrangler?
A: For 2003-2011 models without a distributor or rotor, and 2012 and later models with coil-over plug ignition, inspect spark plug wires when installing new spark plugs. Start with a visual check of the wires in a dark, ventilated area while the engine runs. Arcing or sparking indicates a wire break, requiring replacement. Inspect wires individually, marking them for identification. Disconnect each wire from the spark plug, check for corrosion, and reattach securely. The wire should fit snugly and be clean of dirt and grease. Check for burns, cracks, or other damage. Disconnect the wire from the distributor, check for corrosion, and reattach. Ensure secure connections at the distributor and spark plug. If replacement is needed, get a specific set for the engine model and replace wires one at a time to maintain firing order. Inspect the distributor cap for cracks, carbon tracks, and worn or loose contacts. Replace if damaged. When installing a new cap, transfer wires one at a time to maintain firing order.