Rio L4-1.6L (2004)
Spark Plug: Testing and Inspection
INSPECTION
1. Reconnect negative battery cable.
2. Connect spark plug to high-tension lead.
3. Hold spark plug with insulated pliers 0.2 to 0.39 inch (5 - 10 mm) from a ground.
WARNING: Do not touch vehicle body during following instructions.
4. While holding spark plug, have a second person crank engine. Verify that a strong blue spark jumps from spark plug to ground.
5. If there is no spark or the spark is weak, check for, and implement correction:
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Carbon deposits. Clean out or replace plug.
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Oil fouling. Correct oil problem, replace plug.
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Worn or burnt electrode. If present, replace plug.
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Broken or burned ceramic insulator. If present replace plug.
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Damaged spark plug ring. If so, replace ring.
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Improper spark plug gap. Regap if possible, otherwise replace plug.
A6D Gap: 1.0 - 1.1 mm (0.039 - 0.043 in.)
