Question about 2003 Nissan Altima

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Changing the spark plugs on 2003 altima 2.5L

I am an auto repair novice and wanted to know how to change the plugs in my '03 altima.

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  • Anonymous Apr 21, 2009

    dont know how to cange the spark plug

  • yadayada
    yadayada May 11, 2010

    Get yourself a spark plug socket, a good 3/8" drive ratchet and an assorment of drive extensions, that is about it.

  • Anonymous Mar 22, 2014

    spark plug gap

  • Anonymous Mar 25, 2014

    where is the air bag module located in a 03 Altima

  • Anonymous Mar 25, 2014

    what is the air bag module on a 03 Altima



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Not that simple on newer cars, but you do still need those tools.

Here is a good write-up: Changing Plugs on an Altima that will show you the location of the coil packs that must be removed first (9th picture from the bottom) and what they look like.

Doesn't really need to be done until about the 100,000 mile mark. Do not do it while the engine is hot or even warm. Replace with the factory recommended spark plug. Place a little anti-seize on the threads and some dielectric grease on the top. Be sure you torque them down to the proper setting. I believe it is somewhere around 20 ft. lbs., but if you call the Nissan service desk they should be able to tell you for sure.

Posted on Oct 07, 2008


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