seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

Removing and installing suction-jet pump > < Removing and installing fuel gauge sender 2G169
Spray jet:
Spray jet:
   
The fuel tank of the vehicles with four wheel drive is divided into two chambers, one left and the other right. To transport the fuel from the left side of the tank -3- up to the fuel supply unit containment accumulator -2- (in the right side of the tank), a spray jet -1-is used.
Spray jet functioning
The nozzle functions according to a simple physical principle: The pressure jet from the electric fuel pump is pressed through a nozzle by the pressure and therefore accelerated. As a consequence of this acceleration, the surrounding fuel is dragged and impelled to the fuel supply unit accumulator.
Faults caused by a defective spray jet
  Caution
If the ejector is faulty, the vehicle may be immobilised by lack of fuel, even if the tank is at 1/4 of its capacity.
If the nozzle does not function, 15 litres of fuel may remain (approximately 1/4 of the tank capacity) in the left part of the fuel tank, that the fuel supply unit would not be able to aspirate.
If, with the tank up to 1/4 of its capacity, approximately, the vehicle stops due to lack of fuel, proceed in the following manner:
–  Check fuel pump → Chapter.
If the fuel pump is OK, but does not supply fuel:
–  Add some 5 litres more of fuel.
–  Start engine.
If the engine now starts:
–  Replace the nozzle → Chapter.
  A20-1222

Removing and installing suction-jet pump > < Removing and installing fuel gauge sender 2G169