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:
Assembly overview - electronically controlled damping system, multi-link
suspension, saloon
1 -
Front right vehicle lever sender -G289-
Removing and installing
→ Chapter
2 -
Front right body acceleration sender -G342-
Removing and installing
→ Chapter
3 -& ...
Assembly overview - flanging tool
The flanging tool for brake lines -VAS 6056- can be used to
flange brake lines with an outer pipe diameter of 5 mm without
damaging the coating. In certain cases, this allows sections of
brake lines to be renewed at less expense.
N ...
Handling pressure tanks
Secure vessels against falling over!
Secure standing cylinders against falling over and lying
cylinders from rolling away.
Do not throw pressure vessels!
When falling, the containers may become sev ...
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Removing and installing fuel pump control unit -J538-