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Electronic power control (EPC) > < Checking delivery rate

Leon Mk2

Checking fuel pump non-return valve
Checking fuel pump non-return valve
Check conditions
l  Remote control -V.A.G 1348/3A- is still connected.
l  Pressure gauge -V.A.G 1318- is still connected.
Test sequence
  Note!
With this check the fuel supply pipe connections from the fuel delivery unit to the point at which the pressure gauge -V.A.G 1318- is connected will be checked for leaks at the same time.
   
–  Close pressure gauge shut-off tap (lever at right angles to through flow direction, position -B-).
–  Operate remote control at short intervals, until a pressure of approx. 3 bar
  Caution
Danger of spray when opening the shut-off tap, hold container over the pressure gauge free connection.
–  If pressure builds up too high, lower excess pressure by carefully opening the shut-off tap.
–  Observe pressure drop on gauge. After 10 minutes the pressure must not drop below 2.5 bar
If the pressure drops further:
–  Check pipe connections for leaks.
If no wiring fault is detected:
–  Fuel pump defective, renew fuel delivery unit → Chapter, Fuel delivery unit: removal and installation.
  E20-0030

Electronic power control (EPC) > < Checking delivery rate