Question about 2003 Chevrolet Impala

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Changing spark plugs 2003 Impala 3.4 eng. i.e. removing and reinstalling upper intake manifold

I've never changed plugs in this car. It has nearly 94,000 miles. Descriptions say you must remove the upper intake manifold to replace the firewall side plugs. How difficult a job is this? Will it require more tools, such as a torque wrench and/or new manifold gaskets?

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  • Anonymous Jul 24, 2008

    Remove the pins in the front motor mounts and pry the engine forward to get to the spark plugs near the firewall

  • Anonymous Mar 25, 2014

    How to

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I have a 2003 chevy Impala and it's not so difficult. Try using a small ratchet that fits in the palm of your hand, I can't remember what it is called. To install the plugs use an extension and put a couple of the card board pieces from one of the spark plug boxes in between the new spark plug and the spark plug puller socket, this will hold the new plug in place while you work with the extension. When screwing in the plug you will have to go by feel so move the extension back and forth like a light jiggle while turning to avoid cross threading the plug. After the plug is tightened attach the ratchet and slightly torque into place.

Posted on Jan 04, 2009

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Not that hard just a tight fit have someone do it with little hands lol

Posted on Mar 20, 2009

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Removing coil packs and map hoses help keeping in mind that you just can't go get the hoses at any part ..

Posted on May 16, 2011

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It will require new manifold gaskest it may take between 2 to 3 hrs of your time but not any special tools need it.

Posted on May 28, 2008

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