2016 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Tumble Generator Valve Assembly: Removal

NOTE: The tumble generator valve assembly is tightened together with the intake manifold.
  1. Disconnect the ground terminal from battery sensor. < Ref. to BATTERY , NOTE, Note. >
  2. Remove the intake manifold. < Ref. to REMOVAL , Intake Manifold. >
  3. Remove the air intake adapter from the cylinder head.
    • RH side
      Fig 1: Locating Tumble Generator Valve Assembly Bolts (RH Side)
      G10266121Courtesy of SUBARU OF AMERICA, INC.
    • LH side
      Fig 2: Locating Tumble Generator Valve Assembly Bolts (LH Side)
      G09479645Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the cylinder head plate from cylinder head.
    Fig 3: Locating Cylinder Head Plate
    G10266123Courtesy of SUBARU OF AMERICA, INC.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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