Question about 2004 Subaru Forester

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How do i replace spark plugs on 2004 subary forester

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Replace one at a time. Don't remove all the wires at once or the firing order will be messed up.
Make sure spark plug area is clean so no debris will fall inside the cylinder.
Remove plug wire by pulling it off by the boot and not the wire itself.
Then with extension(s) spark plug socket and socket wrench, turn them counter-clockwise until they are out, put new plug in and tighten clockwise. It may be easiest to start them by using your hand instead of the socket wrench itself. Make sure they start going in fairly easily. If they feel tight right away, the threads may not be seating right and they can get cross-threaded.
Tighten completely, don't over tighten but not loose, just snug. Then push boot from plug wire back on and move to the next one.

Posted on Apr 30, 2010

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The easiet way by far is from under the car.

Posted on Apr 30, 2010

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