daihatsu Workshop Repair Guides

Daihatsu Workshop Service and Repair Manuals

Positive Crankcase Ventilation > < Vacuum Modulator, EGR <--> [Vacuum Amplifier, EGR]|Locations|Page 1180
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Vacuum Modulator, EGR: Testing and Inspection

1.

On a cold engine, disconnect vacuum hoses from ports P and Q from vacuum modulator.

2.

Plug port P. Blow into port Q and ensure air passes through the air filter side freely.

3.

Plug disconnected vacuum hoses and start engine.

4.

Warm engine and idle at 3000 RPM.

5.

Repeat steps 2. Ensure a strong resistance to air flow.

6.

If any test fails, replace the EGR vacuum modulator.

Positive Crankcase Ventilation > < Vacuum Modulator, EGR <--> [Vacuum Amplifier, EGR]|Locations|Page 1180