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Home >> Chevrolet >> 2014 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 1.2L - Repair Instructions >> Repair Instructions >> Spark Plug Inspection >> Spark Plug Usage
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Spark Plug Usage

  1. Ensure that the correct spark plug is installed. Refer to Ignition System Specifications .
  2. Ensure that the spark plug has the correct heat range. An incorrect heat range causes the following conditions:
    • Spark plug fouling-colder plug
    • Pre-ignition causing spark plug and/or engine damage-hotter plug
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