Checking Delivery Rate
- Danger of fire or explosion
→ Avoid contact with hot parts or sources of ignition.
→ Use suction to remove ignitable vapours.
→ Attach warning sign in a clearly visible position.
!Contain leaked media using non-flammable absorbent material and put it in a container designed for this purpose for disposal in accordance with local requirements.
→ Secure collection containers/vessels to prevent them from tipping over.
Information
- The battery voltage must not fall below 12.5 volts during the delivery rate/pressure check.
Information
- There is no need to create a Vehicle Analysis Log (VAL).
- Disconnect fuel supply line -2 and 3-
from connection point in engine compartment -1-
.
Unclip low-pressure fuel line (rear section) -3- .
Carefully open the locking clip using a small slotted screwdriver and unclip line by pulling it downwards.
Carefully pull red fuse -Arrow- at the plug-in coupling down as far as the locking point using a suitable slotted screwdriver.
Make sure the plug-in coupling is not damaged while doing this.
Disconnect fuel supply line -2 and 3- .
Collect escaping fuel and close off the front section of the fuel supply line using a suitable stopper.
Fuel low-pressure line plug-in coupling connection
- Prepare for the test.
9705 (measuring adapter shown as an example)
Provide a suitable fuel-resistant container and secure to prevent it from falling over.
> 9705 - Connect the measuring adapter-1- to the quick connector on the rear section of the fuel supply line and check that it is fitted securely.
Place drain hose into the container provided.
- Check fuel delivery rate.
Connect the PIWIS Tester to the vehicle and switch on the PIWIS Tester .
Switch on the ignition.
Start diagnostics.
Select DME control unit.
Select the Drive links/checks tab.
Select the Drain tank menu item and press F12 to continue.
Press F8=Start and the stopwatch at the same time to start the drain tank function .
Wait 30 seconds and then press F8=Start to stop the drain tank function .
- Switch off ignition, switch off the PIWIS Tester and disconnect adapter line in the vehicle.
- Pour the collected fuel into the measuring cup and evaluate.
> Volume 2200 cm 3
- > 9705 - Remove measuring adapter and collect escaping fuel.
- Connect fuel supply line -2 and -3-
to connection point in engine compartment -1-
.
Connect fuel supply line -2 and 3- .
Carefully lock the locking clip on the plug-in coupling using a small slotted screwdriver.
Fuel low-pressure line plug-in coupling connection