porsche Workshop Repair Guides

Porsche Workshop Service and Repair Manuals

Checking Fuel Pressure In the Low-Pressure System|Page 1972 > < Checking Fuel Pressure In the Low-Pressure System|Page 1970
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Fuel Pressure: Testing and Inspection
Checking Delivery Rate of Electric Fuel Pump

Checking Delivery Rate Of Electric Fuel Pump

Tools

Technical values

Preliminary work

INFORMATION:  The battery voltage must not fall below 12.5 volts during the fuel delivery rate check.

1. Check the battery charge state using a voltmeter or the PIWIS Tester 9718.

1.1. Connect a battery charger.

2. Attach or mount a warning sign in a clearly visible position on the vehicle.
3. Reduce fuel pump supply pressure. This procedure does not cause an entry to be made in the fault memory.

Checking Fuel Pressure In the Low-Pressure System|Page 1972 > < Checking Fuel Pressure In the Low-Pressure System|Page 1970