seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Fuel supply system components: Removing and installing > < Components of the activated carbon tank system: removing and installing

Leon Mk1

Deaeration of fuel tank: check
Deaeration of fuel tank: check
Special tools and workshop equipment required
   
t  Manual vacuum pump -SAT 1390-
  W00-2716
t  Vacuum gauge -V.A.G 1368-
t  Adapter -SAT 1368/1-
Checking process
  W00-0567
–  Remove the deaeration tube -2- of the activated carbon tank -1- from the butterfly valve control unit -3-.
–  Attach the tube -2- to the manual vacuum pump -SAT 1390-.
–  Separate the ventilation tube -5- which goes from the fuel tank to the activated carbon tank, and fit it to the pressure fall tester -V.A.G 1368-“connection A”; to do so, use adapter -SAT 1368/1-.
–  Fit the pressure fall tester -V.A.G 1368-“connection B” to the ventilation tube -4- which goes to the activated carbon tank. To do so, use adapter -SAT 1368/1-.
–  Set the pressure fall tester in position “B”.
–  Begin diagnosis of actuators and select the electrovalve for the activated carbon tank -N80- → Diagnostics operations unitVAS 5051.
–  Operate the manual pump -SAT 1390- several times. Suction should not be created.
If suction is created:
–  Check the aeration connection -6- of the activated carbon tank -1- for dirt; if necessary, clean.
If suction is not created:
–  Unscrew the plug from the fuel filler hole.
  E20-0017
–  Connect the manual vacuum pump -SAT 1390- to the pressure fall tester -V.A.G 1368-“connection B”.
–  Set the pressure fall tester to position “A/B”.
–  Operate the -SAT 1390- several times. No suction should be created.
If suction is created:
–  Check the gravity valve → Item.
–  Check the continued flow from the fuel tank tube -1-.
If suction is not created:
–  Screw the plug into the fuel filler hole.
–  Operate the -SAT 1390- several times. No suction should be created.
  Note!
If the level of fuel in the fuel tank is low, the manual vacuum pump should be operated approximately 20 … 30 times.
If suction is created:
–  Renew the plug in the fuel filler hole.
  E20-0018

Fuel supply system components: Removing and installing > < Components of the activated carbon tank system: removing and installing