Touareg V8-4.2L (BAR) (2007)
/Page-1584008.png)
-
Check fuel line to sensor flange --> [ (Item 15) Flange ] See: Fuel Tank/Service and Repair/Removal and Replacement/Fuel Tank and Attachments
Assembly Overview, for leaks.
-
Check all additional fuel lines in fuel tank for leaks.
If no malfunctions are found on fuel line:
-
Pressure relief valve in fuel delivery unit flange faulty.
-
Replace sensor flange with pressure relief valve --> [ (Item 15) Flange ] See: Fuel Tank/Service and Repair/Removal and Replacement/Fuel Tank
and Attachments Assembly Overview.
Delivery Quantity, Checking
-
Release the high pressure in the fuel system. Refer to --> [ Releasing Pressure on High Pressure Side ] See: Fuel Filter/Fuel Pressure
Release/Service and Repair.
CAUTION!
Fuel supply line is under pressure! Wear protective goggles and protective clothing to prevent injuries and contact with skin. Before
loosening hose connection, wrap a cloth around the connection. Then release pressure by carefully loosening the union nut.
Test Sequence
-
Read safety precautions before beginning work. Refer to --> [ Safety Precautions ] See: Service Precautions/Vehicle Damage Warnings/Safety
Precautions.
-
Observe the rules for cleanliness. Refer to --> [ Clean Working Conditions ] See: Service Precautions/Vehicle Damage Warnings/Clean Working
Conditions.
‹› A second technician is needed for the following task.
-
Connect the pressure gauge (VAG 1318) with adapter (VAG 1318/7), adapter (VAG 1318/10) and adapter (VAG 1318/13) as shown.
-
However, do not connect the end of hose (VAG 1318/13) to the fuel rail connector.
-
Hold the end of hose (VAG 1318/13) in a measuring container.
-
Open the shut off valve for the pressure gauge (VAG 1318). The lever points in the direction of flow.
-
Switch ignition on.
-
Operate the remote control (VAG 1348/3A). Slowly close the shut off tap, until pressure gauge shows 4 bar fuel pressure. From this point on do
not move position of the shut off tap.
-
Do not operate the remote control (VAG 1348/3A) any more.
