Toyota 19101-61102 Cap Sub-Assy, Distributor

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Check spark plug wires when installing new plugs. If seen, get new wires. After the engine cools, inspect the distributor cap and rotor. Disconnect each wire from the spark plug, check for corrosion, and ensure a tight fit. Disconnect the wire from the distributor, checking for corrosion and a secure fit. If new wires are needed, buy a set for your engine model and replace them one by one. Check the distributor cap and rotor for cracks and loose contacts. Also, replace if damaged. If keeping the old cap, check the resistance between the wires and the cap.