Checking fuel pump delivery rate
WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Toxic substances
- Danger of poisoning or suffocation
- Danger of burns to the eyes and skin
→ Wear personal protective gear.
→ Ventilate the work area well.
→ Never ingest or inhale.
→ Read specific information on the Hazard Sheet.
→ Do not smoke, eat or drink in the work area.
WARNING:
Highly inflammable or explosive materials
- Danger of fire or explosion
→ Avoid contact with hot parts or sources of ignition.
→ Use suction to remove ignitable vapors.
→ Attach warning sign in a clearly visible position.
- Loosen clamp and pull off fuel supply line (low-pressure). Soak up emerging fuel with a cloth.
- Connect the tester to the low-pressure hose on the body side. The setup must be fully sealed. → see figure below
- Hold the free end of the hose downstream of the pressure reducer into a large measuring container (recommended volume of 5 liters).
- Connect the Tester and get it ready. PIWIS Tester II 9818
- 4.1. Connect charger to the vehicle battery. The voltage should be approx. 12.5 V (no quick charging allowed because the voltage is too high!).
- 4.2. The fuel pump can be activated and deactivated as follows:
- 4.3. Diagnostics => Macan => DME => Drive link test/checks => Drive links => Fuel pump 1
- 4.4. 100% is displayed. The fuel pump starts to deliver fuel when you press Start.
- 4.5. The fuel pump stops when the percentage value changes to 0%. Press Start again.
- Have a stopwatch ready.
- Activate the fuel pump. The fuel pump must deliver at least 3 liters a minute .