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Home >> Mazda >> 2002 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - System & Component Testing >> Variable Valve Timing System >> Variable Valve Timing Actuator >> Extreme Spark Retard Position
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Extreme Spark Retard Position

  1. Disconnect negative battery cable.
  2. Remove Variable Valve Timing (VVT) actuator.
    CAUTION: If engine oil gets on parts, they may not function properly. When removing VVT actuator, be sure to cover other parts with a cloth to protect them from oil.
  3. Ensure camshaft dowel pin hole on VVT actuator is aligned with top of third tooth, by counting back 3 teeth to sprocket gap which is aligned with alignment mark. See Fig 1 . If not as specified, stopper pin in VVT actuator is not engaged at position of maximum valve timing retard. Replace VVT actuator.
  4. Install VVT actuator.
Fig 1: Checking Alignment Of Camshaft Dowel Pin
G00143774Courtesy of MAZDA MOTORS CORP.
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