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:
Warning and indicator lamps
First read and observe the introductory information
and safety warnings
Lit up
Possible cause
Solution
Gearbox fault.
Do not drive
on!
Move the selector lever to position P and leave the gearbox
to cool down.
If ...
Removing and installing gas strut
Removing
Note
The rear lid must be supported when a gas strut is removed. One gas
strut alone cannot support an open rear lid.
–
Open rear lid and brace it open.
...
Assembly overview - door components
Note
Only the left side is shown. The right side is similar.
1 -
Front door
Removing and installing
→ Chapter
Adjusting
→ Chapter
2 -
Sticker
Diameter 28 mm
If necessary, manu ...
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Removing and installing fuel pump control unit -J538-