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Written tutorial (credit to Greg for the awesome writeup): http://goo.gl/8ZXpzD

This video will show you how to replace the following items on your 2002 Nissan Maxima V6 engine. This also applies to some infinity models.

Spark plugs
Ignition coils
Air intake gasket

Changing the spark plugs is something that should be done regularly at about every 30,000 miles.
The ignition coils do not need to be changed this often but it is better to replace them on older engines such as mine.

This is also something you should do if you are reading any misfire codes, your MPG drops, or your engine just doesn't seem to have as much umph as it did before.


Tools & Parts Used

Spark plugs (NGK - iridium): http://amzn.to/1Vk0v6l

Spark plug socket: http://amzn.to/1Vk0ZcH

Ignition coils (optional but recommended): http://amzn.to/1Xticy3

Gasket: http://amzn.to/23BtEeJ

Allen Wrench set: http://amzn.to/1YrSXMW

Hose clamp pliers: http://amzn.to/1XtixAZ

Air intake cleaner: http://amzn.to/22rLzCc

Ratchet and wrench set: http://amzn.to/21xOFcR

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