Wednesday, July 3, 2013

Subaru Outback spark plugs are designed to last up to 100,000 miles. The Subaru automobile company suggests you check Outback spark plugs every 30,000 to 60,000 miles for corrosion or damage. The Subaru Outback fuel mileage depends highly on the condition of its spark plugs.

Instructions

    1

    Park the car in a shady area and allow the engine to cool. Locate the spark plug cables located on the sides or front and back of the engine, depending on the year model. For engines manufactured after 2000, you need remove the intake manifold and windshield washer tank to access the spark plug wires. Use the screwdriver to remove these pieces. Do not disconnect any hoses to the intake manifold or windshield washer tank.

    2

    Grasp the boot of the spark plug wire and gently turn and pull backward to release the boot from the spark plug. Inspect the inside of the boot for damage or corrosion. Gently remove any corrosion or debris with the wire brush.

    3

    Insert the socket into the spark plug well. Unscrew the spark plug from the well and then pull it out.

    4

    Spread anti-seize compound around the threads of the new spark plug and inside the boot.

    5

    Place the new spark plug into the cylinder well and manually turn the spark plug to thread it into place.

    6

    Test and adjust the spark plug tension as needed. The spark plug's packaging contains instructions about what specific tension is needed for the plug. Tighten the plug for more tension or loosen the plug for less tension.

    7

    Connect the spark plug cable to the spark plug and lightly twist to set it in place. Continue this process for the rest of the spark plugs. Completely change one spark plug at a time to reduce the chance of crossing spark plug wires and damaging the engine.

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