1996-2001 Nissan Altima Spark Plugs Replacement Procedure

1. Disconnect car battery.

2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement

2.Pull out the spark plugs wires.

2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement

3. You will need a 5/8 socket, extension and ratchet to remove the spark plugs.

2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement

4. Remove #1 spark plugs.

2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement

5.Repeat the above steps for spark plugs #2, #3 and #4.

2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement

6.Reinstall new spark plugs wires.

2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement
2007-2012 Nissan Sentra In Cabin Micro Filter Replacement

7. Reinstall the car battery.