Altima 2.5 SL L4-2.5L (QR25DE) (2002)
Spark Plug: Service and Repair
Changing Spark Plugs (Platinum - Tipped Type)
1. Remove engine cover.
2. Remove ignition coils.
3. Remove spark plugs.
Spark Plug
4. Install spark plugs.
Spark plug
Tightening Torque : 20 - 29 N.m (2.0 - 3.0 kg-m, 14 - 22 ft-lb)
Gap (Nominal) : 1.1 mm (0.043 in)
Use standard type spark plug for normal condition.
The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions such as:
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frequent engine starts
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low ambient temperatures
The cold type spark plug is suitable when spark knock occurs with the standard type spark plug under conditions such as:
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extended highway driving
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frequent high engine revolution