Nissan Altima 2007-2010
- Check spark plugs for burnt or broken tips.
- Check for cracked insulators.
- Check spark plug gap and adjust as necessary.
Removal & Installation
Nissan Altima 2007-2008
- On 3.5L engines, remove intake manifold
- Remove ignition coils
- Remove spark plugs.
- Installation is the reverse of removal.
Nissan Altima 2009-2010
- Remove the ignition coil.
Remove the spark plug with a suitable spark plug wrench.
- Installation is in the reverse order of removal.