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:
Securing child seats with a seat belt
First read and observe the introductory information
and safety warnings It is permissible to fasten child seats with
universal written on the orange label to the seats using the seat belt,
but only on the seats marked in the table with a u.
Weight class
Fr ...
Preface
The contents of this guide are separated into two parts.
The first part contains information and important notes on
the subject of “Trailer operation”. The technical prerequisites
for towing trailers or the function of the trailer control ...
Balancing wheel, checking radial and lateral run-out of wheels and tyres
Before you start balancing the wheels, the following
requirements must be met.
Tyre pressure must be OK.
Tread must not be worn on one side. Tread depth should be at
least 4 mm.
T ...
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Removing and installing fuel pump control unit -J538-