Camaro V8-6.2L (2010)
Spark Plug: Testing and Inspection
Spark Plug Inspection
Spark Plug Usage
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Make sure that the correct spark plug is installed. An incorrect spark plug causes poor driveability conditions. Refer to Ignition System
Specifications (See: Powertrain Management/Ignition System/Specifications).
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Make sure that the spark plug has the correct heat range. An incorrect heat range causes the following conditions:
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Spark plug fouling due to a colder plug
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A pre-ignition condition, causing spark plug and/or engine damage due to a hotter plug
Spark Plug Inspection
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Inspect the terminal post (1) for damage.
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Inspect for a bent or broken terminal post (1).
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Test for a loose terminal post (1) by twisting and pulling the post. The terminal post (1) should NOT move.
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Inspect the insulator (2) for flashover or for carbon tracking soot. This condition is caused by the electrical charge travelling across the insulator
(2) between the terminal post (1) and ground. Inspect for the following conditions:
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Inspect the spark plug boot for damage.
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Inspect the spark plug recess area of the cylinder head for moisture from such as oil, coolant, or from water. A saturated spark plug boot causes
arcing to ground.
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Inspect the insulator (2) for cracks. All or part of the electrical charge may arc through the crack instead of through the electrodes (3, 4).
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Inspect for evidence of incorrect arcing.
