Test Step 5 - Check Fuel Delivery System Output

WARNING:

The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting, or line, the fuel system pressure must be released. Failure to follow these instructions can result in possible serious or fatal injury.

Ignition on, engine not running.
With the scan tool, actuate the fuel pump.
Open the flow test valve (1) for 20 seconds, then close the valve.

CAUTION:

Stop All Actuations.

Turn the ignition off.
Measure the amount of fuel in the reservoir assembly (2). The fuel output specification is ml/s X 20 seconds = fuel flow in ml.

Fig 1: Identifying Flow Test Valve And Reservoir Assembly

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Fuel Flow
ENGINE	ml/s	ml per 20 Seconds
6 Cylinder	20.8333	417

Does the amount of fuel in the reservoir meet or exceed the specification?

Yes

Test complete.

Perform the Fuel Delivery System diagnostic procedure. Refer to FUEL DELIVERY SYSTEM TEST .