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Intake Induction (H4DO): Diagnosis Subaru Forester SJ

Mechanical 8 illustrations ~339 words

INSPECTION

  1. Check that the air cleaner element has no deformation, cracks or other damages.
  2. Check the air cleaner element for excessive dirt.
  3. Replace the air cleaner case (rear) if the HC absorption filter is damaged.

Scheme 881

Scheme 881: REMOVAL

Scheme 882

Scheme 882

Scheme 883

Scheme 883

Scheme 884

Scheme 884

Scheme 885

Scheme 885
  1. Disconnect the ground cable from battery.
  2. Remove the air intake duct (rear). < Ref. to «REMOVAL»(ref-662120-S42382818082014101300000) , Air Intake Duct. >
  3. Disconnect the connector (A) from the mass air flow and intake air temperature sensor, and remove the clip (B).
  4. Loosen the clamp (A) which secures the air intake boot to the air cleaner case (rear), and then remove the clip (B) from the air cleaner case (front).
  5. Remove the air cleaner case (rear) and air cleaner element.
  6. Remove the bolt (A) and nut (B) which secure the air cleaner case (front) to the vehicle and to the air cleaner case bracket.
  7. Remove the air cleaner case (front).
  8. Remove the air cleaner case bracket from the vehicle.
  1. Check that the air cleaner case has no deformation, cracks or other damages.
  2. Check that the air intake boot has no cracks, damage or loose part.

Scheme 886

Scheme 886: REMOVAL
  1. Remove the clip (A) from the air intake boot.
  2. Loosen the clamp (B) securing the air cleaner case (rear) to the air intake boot.
  3. Loosen the clamp (C) which secures the throttle body to the air intake boot.
  4. Disconnect the PCV hose and remove the air intake boot.
  1. Check that the air intake boot has no deformation, cracks or other damages.
  2. Inspect that no foreign objects are mixed in the air intake boot.

Scheme 887

Scheme 887: REMOVAL

Scheme 888

Scheme 888
  1. Remove the clip which secures air intake duct (rear), and remove the air intake duct (rear).
  2. Remove the clip (A) and four claws and then remove the air intake duct (front).
  1. Check that the air intake duct has no deformation, cracks or other damages.
  2. Inspect that no foreign objects are mixed in the air intake duct.

Check that the resonator chamber has no deformation, cracks or other damages.