mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Fuel Injector - Checks for Proper Installation|Page 2944 > < Fuel Injector - Checks for Proper Installation|Page 2942
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Fuel Injector: Testing and Inspection

Fig. 23 On vehicle inspection, injectors.

    Steps 1 through 5 apply to non-turbocharged models only.

1.

Using a mechanic's stethoscope, check operating sound of primary injectors from idle through acceleration Fig. 23.

Fig. 24 Secondary injector inspection.

2.

Disconnect vacuum hose from boost sensor.

3.

Start engine and check operating sound of secondary injectors above 3500 RPM Fig. 24. If operating sounds are not heard in steps 1 and/or 3,
proceed to step 4, otherwise, proceed to step 11.

Fuel Injector - Checks for Proper Installation|Page 2944 > < Fuel Injector - Checks for Proper Installation|Page 2942