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Home >> Mitsubishi >> 1987 >> Starion ESI-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Ignition System - Lancer Evolution) >> Ignition System >> On-Vehicle Service >> Spark Plug Check And Cleaning >> Spark Plug Insulation Resistance Check
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Spark Plug Insulation Resistance Check

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure the insulation resistance. If the insulation resistance of the spark plug is under the limited value, clean the plug within 20 seconds using a plug cleaner.
  2. After cleaning, measure the insulation resistance again. Replace the plug unless it is within the limited value.

    Limit: Minimum 10 MΩ 

    Fig 1: Checking Spark Plug Insulation Resistance
    G05375455Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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