VACUUM PUMP INSPECTION

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1. Warn up the engine.

2. Disconnect the vacuum hose from the vacuum pump and connect a vacuum gauge as shown in the figure, then check the vacuum.

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• If the pressure is less than the specification, inspect for the following.

― Malfunction of the vacuum pump

― Shortage of the lubrication oil pressure

Vacuum specification (In 20 s)

Engine speed 1,270 rpm: 74 kPa {550 mmHg, 22 inHg} or more

Engine speed 2,450 rpm: 94 kPa {700 mmHg, 28 inHg} or more