Onvehicle Inspection Of Turbocharger

1. INSPECT INTAKE AIR SYSTEM

Check for leakage or clogging between the air cleaner and turbocharger inlet and between the turbocharger outlet and cylinder head.

• Clogged air cleaner Clean or replace element

• Hoses collapsed or deformed Repair or replace

• Leakage from connections____Check each connection and repair

• Cracks in components Check and replace

2. INSPECT EXHAUST SYSTEM

Check for leakage or clogging between the cylinder head and turbocharger inlet and between the turbocharger outlet and exhaust pipe.

• Deformed components Repair or replace

• Foreign material in passages Remove

• Leakage from components Repair or replace

• Cracks in components Check and replace

3. INSPECT ACTUATOR OPERATION

(a) Disconnect the actuator hose.

(b) Using SST (turbocharger pressure gauge), apply approx. 0.66 kg/cm2 (9.4 psi, 65 kpa) of pressure to the actuator and check that the rod moves.

If the rod does not move, replace the turbocharger assembly.

SST 09992-00241

NOTICE: Never apply more than 0.83 kg/cm2 (11.8 psi, 81 kPa) of pressure to the actuator.

4. CHECK TURBOCHARGING PRESSURE

(a) Using a 3-way connector, connect SST (turbocharger pressure gauge) to the hose between the intake manifold and turbocharging pressure sensor.

SST 09992-00241

(b) While driving with the engine running at 2,800 rpm or more with the throttle valve fully open in the 3rd gear, check the turbocharging pressure.

Standard pressure: 0.50 - 0.83 kg/cm2

If the pressure is less than that specified, check the intake air and exhaust systems for leakage. If there is no leakage, replace the turbocharger assembly.

If the pressure is above specification, check if the actuator hose is disconnected or cracked. If not, replace the turbocharger assembly.

5. INSPECT IMPELLER WHEEL ROTATION (See step 1 on page TC-13)

6. INSPECT TURBOCHARGING PRESSURE VSV (See page Fl-165)

7. INSPECT TURBOCHARGING PRESSURE SENSOR (See page FI-171)

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