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:
Special pliers with insert
The special pliers without insert -VAS 1978/1- with insert
for special pliers -VAS 1978/2- is part of the wiring harness
repair set -VAS 1978- and is used to crimp connectors during
wiring harness repairs.
...
Removing and installing bonnet lock, RHD vehicle
Special tools and workshop equipment
required
Torque wrench -V.A.G 1331-
–
Open bonnet.
–
Remove Bowden cable on mounting bracket ...
Ensuring proper assembly temperature for tyres
Caution
Risk of damage to tyres due to excessive heat.
Never heat tyres with a radiator or hot air blower.
Heat tyres with warm water or warm air (m ...
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Removing and installing fuel pump control unit -J538-