Audi Q7 2007 Repair Manual page 53

1 - Front Suction Jet Pump
2 - Distribution Piece
❑ For suction jet pipe.
3 - Fuel Delivery Lines
❑ From the suction jet
pumps to the fuel deliv‐
ery unit.
❑ Clipped to the fuel deliv‐
ery unit.
4 - Fuel Delivery Unit
❑ With Transfer Fuel
Pump - G6- .
5 - Suction Jet Pipe
❑ From fuel pump to suc‐
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
tion jet pump.
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
❑ To disconnect, press re‐
lease button on connec‐
tion piece.
6 - Rear Suction Jet Pump
Function of Suction Jet Pump
Function of the suction jet pump is based on a simple physical
principle: a suction jet from the electrical fuel pump is compressed
by a nozzle in the suction jet pump and is thereby accelerated.
This acceleration causes the surrounding fuel to be drawn in and
be forced to the baffle housing of the fuel delivery unit.
Malfunctions of Defective Suction Jet Pump
Caution
Tow-in due to faulty suction jet pump.
♦ If suction jet pump is faulty, vehicle can stop running when
tank is partially filled due to lack of fuel.
If vehicle stops with partially filled tank due to lack of fuel, proceed
as follows:
– Check fuel pump. Refer to
⇒ "2.2 Fuel Pump, Electrical Testing", page 20
If the fuel pump is OK, but no fuel is supplied:
– Fill fuel tank with approximately five liters (5.28 qts) of fuel.
Fuel Supply System - Edition 10.2018
.
2. Fuel Pump, Fuel Delivery Unit and Fuel Level Sensor
Audi Q7 2007 ➤
49