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 |
 Note
| 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. |
| – |
The suction-jet pump cannot be renewed individually. Renew
fuel tank
→ Chapter. |
|
|
|
Special tools and workshop equipment
required
Removal wedge -3409-
Procedure:
...
Other materials:
Notes on releasing and dismantling contact housings
Note
Observe the general notes on repairs to the vehicle
electrical system
→ Chapter.
To release, always use the correct release tools. Under no
circumstances should the contacts be pulled out of the ...
Removing and installing telephone microphone -R38-
Removing
–
Switch off ignition and all electrical consumers, and remove
ignition key.
–
Removing front interior light -W1-
→ Electrical system; Rep. gr.96.
&nbs ...
Checking ABS sensor ring
Special tools and workshop equipment
required
Sensor gauge -T10473-
Procedure
Wheel bearing unit is removed.
...
© 2016-2026 Copyright www.vwgolf.org
Removing and installing fuel pump control unit -J538-