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REPLACEMENT Subaru Impreza WRX GH

General Information 6 illustrations ~573 words

REPLACEMENT

For fuel filter replacement procedure, refer to below.

  1. Non-turbo model FUEL FILTER for H4SO engine. >
  2. Turbo model FUEL FILTER for H4DOTC engine. >

If the filter is clogged, or if the replacement interval has been reached, replace it.

Scheme 56

Scheme 56: REPLACEMENT
Scheme 56: REPLACEMENT

Scheme 57

Scheme 57
Scheme 57

Scheme 58

Scheme 58
Scheme 58
  1. Disconnect the ground cable from the battery.
  2. Remove the air intake duct.
  3. Disconnect the connector from mass airflow and intake air temperature sensor.
  4. Loosen the boot clamp.
  5. Remove the clips on air cleaner case.
  6. Pull the air cleaner case (rear) backward of the vehicle, and remove the element.
  7. Check that there are no foreign objects at the cleaner side, and then install in the reverse order of removal.
CAUTIONBe sure to use SUBARU genuine air cleaner element depending on the engine type when replacing the air cleaner elements. Using other air cleaner element may affect engine.

Scheme 59

Scheme 59: INSPECTION
Scheme 59: INSPECTION

Scheme 60

Scheme 60
Scheme 60

Scheme 61

Scheme 61
Scheme 61
  1. To check the radiator for leakage, fill it with engine coolant, and attach the radiator cap tester (A) to the filler neck, and apply pressure. Check the following points: Non-turbo model: 157 kPa (1.6 kgf/cm 2 , 23 psi) Turbo model: 122 kPa (1.2 kgf/cm 2 , 18 psi) Each portion of radiator for leakage Hose joints and other connections for leakage CAUTION: If the engine coolant adheres to the exhaust pipe, wipe it off completely. NOTE: For turbo model, be sure to install the tester to filler tank side. Be particularly careful not to deform the filler neck of radiator when installing and removing the tester and after testing. Non-turbo model Turbo model When performing this check, be sure to keep the engine stationary and fill radiator with coolant. Wipe off check points before applying pressure. Use care not to spill coolant when detaching tester from radiator. Do not remove the radiator side cap. (Turbo model)
  2. Check the radiator cap valve open pressure using radiator cap tester. NOTE: Rust or dirt on the cap may prevent valve from functioning normally: Be sure to clean the cap before testing. Raise the pressure until the needle of gauge stops and see if the pressure can be retained for five to six seconds. The radiator cap is normal if the pressure keeps to be the same as or above the limit. Replace the radiator cap if the pressure is below the limit. Radiator cap valve open pressure Non-turbo model Standard: 93 - 123 kPa (0.95 - 1.25 kgf/cm 2 , 14 - 18 psi) Service limit: 83 kPa (0.85 kgf/cm 2 , 12 psi) Turbo model Filler tank side Standard: 93 - 123 kPa (0.95 - 1.25 kgf/cm 2 , 14 - 18 psi) Service limit: 83 kPa (0.85 kgf/cm 2 , 12 psi) Radiator side Standard: 122 - 152 kPa (1.24 - 1.55 kgf/cm 2 , 18 - 22 psi) Service limit: 112 kPa (1.14 kgf/cm 2 , 16 psi)
  3. Start the engine, and then inspect that it does not overheat or it is cooled excessively. If it overheats or it is cooled excessively, check the cooling system. Non-turbo model WATER PUMP for H4SO engine. >, THERMOSTAT for H4SO engine. > RADIATOR for H4SO engine. >, RADIATOR CAP for H4SO engine. > Turbo model WATER PUMP for H4DOTC engine. >, THERMOSTAT for H4DOTC engine. > RADIATOR for H4DOTC engine. >, RADIATOR CAP for H4DOTC engine. >
  4. Check the radiator fan operates using Subaru Select Monitor, when the coolant temperature rise to 95°C (203°F) or more. If it does not operate, check the radiator fan system.
  1. Non-turbo model RADIATOR FAN SYSTEM for H4SO engine. >
  2. Turbo model RADIATOR FAN SYSTEM for H4DOTC engine. >