seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

Components and functions: check > < Supplementary signals: check
Injectors: repair
Injectors: repair
These engines are fitted with two-spring injectors; therefore, the fuel is injected in two phases.
If these injectors fail, they must be replaced as it is not possible to adjust the pressure or repair them.
Special tools and workshop equipment required
t  Injector checker -V.A.G 1322- with Pressure pipe -V.A.G 1322/2-
Checking conditions
l  Manometer connected
Check the pressure of the spray projection
  Caution
When checking the injectors, make sure that the fuel spray does not reach your hands as the high pressure makes the fuel enter the skin, which may cause serious harm.
   
–  Connect the injector to the injector checking apparatus.
–  Push the lever of the pump slightly downwards. When injection begins, read the projection pressure of the spray. If it is different from the theoretical value, replace the injectors.
Theoretical values (positive pressure):
New injectors: 190 … 200 bar
Wear limit: 170 bar
Check the seal
–  Press the pump lever slightly downwards and maintain the pressure at approximately 150 bar for 10 seconds. Fuel must not be seen to be lost through the injector.
–  In the event of leaks, change the injector.
  V02-0184

Components and functions: check > < Supplementary signals: check