Hyundai 27420-38020 Cable Assembly-Spark Plug NO.1

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Ignition coils on top of plugs are used by some models instead of spark plug wires. If you want to make sure that the spark plug wires are alright, this is important when installing new ones. With sufficient aeration and in dimly lit garage, visually inspect the wires while the engine is still running. Be careful with moving parts of the engine and look out for arcing or sparks where there is physical damage. In case there is any arcing, you must get new wires and after it has cooled down you should check ignition coil packs too. Inspect each spark plug wire individually so that you don't mix up the order; mark them accordingly. If numbers are not clear enough, take a piece of tape and write the right number on it then put it around the wire. By twisting and pulling the rubber boot, unplug it from spark plug avoiding to pull on wire itself. Disengage light corrosion using a wire brush but if corrosion is severe replace wires themselves. Tightly push both boot and wire onto the spark plug fitting snugly; crimping inside metal connector with pliers if necessary. Check along all parts for dirt especially at burns, cracks or other damages and clean entire length of wire with cloth to remove grease etcetera. Do not bend sharply or break conductor in between.Disengage from rubber boot on ignition coil pack and check for corrosion tight fit to reconnect again.Inspect rest of spark plug wires ensure they are secure fastened at coil pack and spark plus.If your engine requires new spark plug wires purchase an appropriate set for your model one by one replacing them to prevent firing orders mixing up.Wipe off any moisture around coil pack (s) or spark plug wires (if any) using a moist cloth then dry properly.Turn over crack check that you do not see carbon tracking as well.Armored with these basic facts about changing your car's oil, go ahead to perform it without fear or doubt.

Spark plug wires should be replaced if they have visible damage, heavy corrosion, or if new wires are required.