XL-7 2WD V6-3.6L (2007)
Spark Plug: Testing and Inspection
Spark Plug Inspection
Spark Plug Usage
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Ensure that the correct spark plug is installed. An incorrect spark plug causes driveability conditions. Refer to Ignition System Specifications for
the correct spark plug.
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Ensure that the spark plug has the correct heat range. An incorrect heat range causes the following conditions:
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Spark plug fouling - Colder plug
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Pre-ignition causing spark plug and/or engine damage - Hotter plug
Spark Plug Inspection
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Inspect the terminal post (1) for damage.
