Sentra L4-1.8L (QG18DE) SULEV (2003)
Spark Plug: Service and Repair
Changing Spark Plugs (Double Platinum - Tipped Type)
1. Disconnect ignition coil harness connectors.
2. Remove ignition coils.
3. Remove spark plugs with spark plug socket.
Gap (nominal):...................1.1 mm (0.043 inch)
1.8L (QG18DE)
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
CAUTION: Do not use wire brush for cleaning. If plug is covered with carbon, spark plug cleaner may be used.
Cleaner air pressure.................Less than 588 kPa (6 kg/cm2, 85 psi)
Cleaning time:.................less than 20 seconds
Checking and adjusting plug gap is not required between change intervals.