Intake Air Control System Precaution

Do not stop the engine immediately after towing a trailer, or after high-speed or uphill driving. Idle the engine for 20 to 120 seconds depending on how hard the vehicle has been driven.

Avoid sudden acceleration or racing the engine immediately after starting a cold engine.

If the turbocharger is found to be defective and must be replaced, check the following and repair or replace as necessary:

1. Engine oil level and quality
   

2. Conditions under which the turbocharger was used
   

3. Oil lines leading to the turbocharger
   

Be careful when removing and reinstalling the turbocharger. Do not drop or strike the turbocharger. Also, do not grasp or apply pressure to fragile areas of the turbocharger (for example, the actuator).

Before removing the turbocharger, plug the intake port, exhaust port and oil inlet to protect them from dirt and other foreign matter.

If replacing the turbocharger, check for accumulation of sludge particles in the oil pipes.
If necessary, replace the oil pipes.

Completely remove the gasket adhered to the lubrication oil pipe flange and turbocharger oil flange.

When replacing the bolts or nuts, use only authorized replacement parts to prevent breakage or deformation.

If replacing the turbocharger, put 20 cm³ (1.2 cu in.) of fresh oil into the turbocharger oil inlet hole and turn the turbine wheel by hand to spread oil to the bearing.

If overhauling or replacing the engine, cut the fuel supply after installing the engine and crank the engine for 30 seconds to distribute oil throughout the engine. Then allow the engine to idle for 60 seconds.

If the engine is running without the air cleaner, case cover and hose installed, entry of foreign particles will damage the turbocharger.