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Note

• If the following malfunctions exist, diagnosis the turbocharger using the following symptom troubleshooting procedures.

1.Inspect the following items:

• Lack of power:

― Perform “NO.16 LACK/LOSS OF POWER”. (See NO.16 LACK/LOSS OF POWER-ACCELERATION/CRUISE [MZR-CD 2.2].)

• Knocking:

― Perform “NO.17 KNOCKING/PINGING”. (See NO.17 KNOCKING/PINGING [MZR-CD 2.2].)

• Oil leak:

― Perform “NO.20 HIGH OIL CONSUMPTION/LEAKAGE”. (See NO.20 HIGH OIL CONSUMPTION/LEAKAGE [MZR-CD 2.2].)

• Excessive black smoke:

― Perform “NO.23 EXCESSIVE BLACK SMOKE”. (See NO.23 EXCESSIVE BLACK SMOKE [MZR-CD 2.2].)

• Noise:

― Perform “NO. 25 ENGINE NOISE”. (See NO.25 ENGINE NOISE [MZR-CD 2.2].)

Compressor Wheel Inspection

1.Remove the air inlet pipe between the air cleaner and the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

2.Visually inspect the compressor wheel from view A and verify that all fins are free from damage, cracks or bends.

• If there are damaged fins, cracks or bends, replace the turbocharger. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

Note

• To make the inspection easier, set a small mirror as shown in the figure and use a penlight.

• If the compressor wheel is interfering with the compressor housing, it is likely that the fin edges are cracked, damaged, or bent.

• If the compressor wheel is damaged, check the following before replacing the turbocharger to avoid reoccurrence of the malfunction.

― Foreign material in intake air/exhaust system.

― Oil pipe clogging.

― Damage of the turbocharger air inlet pipe and the air inlet pipe.

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Turbine Wheel Inspection

1.Remove the front pipe. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

2.Visually inspect the turbine wheel from view B and verify that all fins are free from damage, cracks or bends.

• If there are damaged fins, cracks or bends, replace the turbocharger. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)

Note

• To make the inspection easier, set a small mirror as shown in the figure and use a penlight.

• If the turbine wheel is interfering with the turbine housing, it is likely that the fin edges are cracked, damaged, or bent.

• If the turbine wheel is damaged, check the following before replacing the turbocharger to avoid reoccurrence of the malfunction.

― Foreign material in intake air/exhaust system.

― Oil pipe clogging.

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