VW Golf manuals

Volkswagen Golf Service & Repair Manual: Removing and installing suction-jet pump

On vehicles with four-wheel drive the fuel tank is divided into a left and a right chamber. A suction-jet pump -2- is used for delivering fuel from the left fuel tank chamber to the baffle housing of the fuel delivery unit -1- on the right.
Function of suction-jet pump
The suction-jet pump operates according to the principle of fluid entrainment: the stream of fuel from the electrical fuel pump is passed through a nozzle in the suction-jet pump, and is thus accelerated. The accelerated stream of fuel draws off the surrounding fuel and delivers it to the baffle housing of the fuel delivery unit.
Faults caused by defective suction-jet pump
Risk of breakdown due to defective suction-jet pump.
If the suction-jet pump is defective, the engine can stop due to fuel starvation when the tank is still 1/4 full.
If the suction-jet pump does not work, approx. 15 litres of fuel (1/4 of tank capacity) remain in the left chamber of the fuel tank and cannot be extracted by the fuel delivery unit.
If the engine stops due to fuel starvation with the tank filled up to about 1/4, proceed as follows:
–  Check fuel pump with → Vehicle diagnostic tester.
If fuel pump is OK, but no fuel is delivered:
–  Refill fuel tank with approx. 5 litres of fuel.
–  Start engine.
If engine starts OK now:
–  The suction-jet pump cannot be renewed individually. Renew fuel tank → Chapter.

Removing and installing suction-jet pump

Removing and installing fuel pump control unit -J538-
Special tools and workshop equipment required     Removal wedge -3409- Procedure: ...

Running gear, axles, steering

Other materials:

2-pack HS Vario surfacer
Designation:   2-pack HS Vario surfacer -LGF 786 004 A4-, grey Issued 04.2013 Product description 2-pack HS Vario surfacer is a high-grade, versatile, VOC-compliant 2-pa ...

Assembly overview - side padding
1 -  Side padding Allocation → Electronic Parts Catalogue Removing and installing → Chapter 2 -  Mounting grommet Clipped into side padding bracket. Renew if damaged 3 -  Side pa ...

Assembly overview - front wheel housing liner
  Note   Minor differences may be encountered in respect of front wheel housing liner, depending on vehicle model.   Only the left side is shown. The procedure for the right side is similar. 1&nbs ...

© 2016-2021 Copyright www.vwgolf.org