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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 759 (Engine Mechanical (Service Information)) >> Variable Valve Timing Actuator Inspection [L3]

Variable Valve Timing Actuator Inspection [L3]

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • Variable valve timing actuator can not be disassembled it is a precision unit.
  1. Disconnect the negative battery cable.
  2. Remove the following parts:
  3. Confirm that notch of the rotor and bump of the cover at the variable valve timing actuator are aligned and fitted.
    • If the notch and the bump are not aligned, turn the crankshaft clockwise two rotations. Verify that the bump and the notch are aligned.
    • If the bump and notch are still not aligned, replace the variable valve timing actuator.
    • If, when turning the crankshaft, there is a hitting noise from the variable valve timing actuator each time the cam passes the fully lifted position, it means that the actuator is not secured. Replace the actuator.
    Fig 1: Locating Notch Of Rotor & Bump Of Cover
    G00973794Courtesy of MAZDA MOTORS CORP.
  4. Install the following parts: