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Home >> Mazda >> 2003 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls [System & Component Testing] >> Variable Valve Timing System >> Variable Valve Timing Actuator >> Mazda6 (3.0L)
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Mazda6 (3.0L)

  1. Remove the cylinder head cover. See VALVE COVER under REMOVAL & INSTALLATION in appropriate article in ENGINES.
  2. Confirm key groove on rotor and timing mark on sprocket of variable valve timing actuator are aligned and fitted. See Fig 1.
    • If key groove and timing mark are not aligned, rotate crankshaft clockwise one rotation and then counterclockwise one rotation. Verify key groove and timing mark are aligned.
    • If key groove and timing mark are still not aligned, replace variable valve timing actuator. Refer to VARIABLE VALVE TIMING ACTUATOR under VARIABLE VALVE TIMING SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.
    • If, when rotating crankshaft, there is a hitting noise from variable valve timing actuator each time cam passes fully lifted position, it means variable valve timing actuator is not secured. Replace variable valve timing actuator.
Fig 1: Identifying Variable Valve Timing Actuator Alignment Marks - Mazda6 (3.0L)
G00193585Courtesy of MAZDA MOTORS CORP.
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