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Electronic engine output control (electronic accelerator) > < Test the fuel flow

Leon Mk1

Test the fuel pump retaining valve
Test the fuel pump retaining valve
Test conditions
l  Remote control -V.A.G 1348/3 A-, connected.
l  Pressure gauge -V.A.G 1318-, connected.
Test process
  Note!
This test also checks for leakage in the fuel supply hose connections, from the supply unit to the point of connection for pressure gauge -V.A.G 1318-.
   
–  Close the shut-off valve of the pressure gauge (lever perpendicular to the direction of flow -Position B-).
–  Activate the remote control with successive brief pulses until a pressure of approx. 3 bar is reached.
  Caution
Danger of splashing when opening the shut-off valve; place a recipient in front of the open connection of the pressure gauge.
–  Release possible excess pressure, carefully opening the shut-off valve.
–  Watch the drop in pressure in the pressure gauge. After 10 minutes the pressure should not drop under 2.5 bar.
If the pressure drop continues:
–  Check the connections for leakage.
If no wiring fault is found:
–  Fuel pump faulty, replace the fuel supply unit → Chapter.
  N20-0132

Electronic engine output control (electronic accelerator) > < Test the fuel flow