VACUUM PUMP INSPECTION [MZR-CD 2.2]

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1.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [MZR-CD 2.2].)

2.  Pinch open the clamp using pliers and disconnect the vacuum hose from the vacuum pipe.

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3.  Install the vacuum gauge as shown in the figure, then check the vacuum.

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4.  Warn up the engine.

•  If the pressure is less than the specification, inspect for the following.
―  Malfunction of the vacuum pump
―  Shortage of the lubrication oil pressure

Vacuum pump vacuum specification (In 10 s) (MZR-CD 2.2)
Engine speed 725 rpm: 66.6 kPa {500 mmHg, 19.7 inHg} or more
Vacuum pump maximum vacuum (MZR-CD 2.2)
Engine speed 725 rpm: 93.3 kPa {700 mmHg, 27.6 inHg} or more

5.  Install in the reverse order of the removal.