Fuel tank with attachments, all-wheel drive (Audi A4 B8)

Table of contents: Fuel tank with attachments,… ↓ Fuel delivery module and fuel level… ↓ Removal and installation the suction… ↓ Fuel filter ↓ Activated carbon absorber ↓

Fuel tank with attachments, all-wheel drive

1. Bolt.
2. Muffler suspension.
3. Bandage.
4. Fuel line: from the fuel filter to the engine; don't overdo it; clipped to fuel. tank; to disconnect, press the fitting lock.
5. Fuel line; only for vehicles with independent heating: to the independent heating metering pump; do not bend: clipped onto the fuel. tank; to disconnect, press the fitting lock.
6. Overflow hose: hung on the bumper bracket.
7. Rubber bowl.
8. Lid; tighten until it clicks: attached to the fuel filler cap assembly. tank using a clamp.
9. Bolt: for fastening the fuel filler neck. tank; to remove electrostatic discharge; 20 Nm.
10. Fuel tank.
11. Ventilation hose; to the activated carbon absorber; don't overdo it; to disconnect, press the fitting lock; clipped to fuel. tank.
12. Heat shield fuel. tank.
13/14. Nut: 2 Nm.
15. Stand.
16. Heat shield fuel. tank.
17. Nut: 2 Nm.
18. Bolt: 20 Nm.
19. Nut: 2Nm.
20. Expansion piston.

Flange cover - tightening torque

Tighten the arrow bolts to 1.5 Nm.

Fuel delivery module and fuel level sensor installation diagram

1. Fuel supply unit: after installation, fill the car with at least 5 liters of fuel.
2. Threaded ring.
3. Lip seal: replace: install dry.
4. Union nut: replace; 120 Nm; removal and installation using the T40068 A socket wrench.
5. Fuel line to the engine; don't overdo it; to disconnect from the flange, press the fitting lock; clipped to fuel. tank.
6. Electrical plug connection: for fuel injection. pump "G6" and fuel level sensor "G".
7. Electrical plug connection of the fuel control unit. pump "J538".
8. Bracket.
9. Fuel control unit. pump "J538".
10. Bolt: 2.5 Nm.
11. Electrical plug connection: for fuel level sensor 2 "G169".
12. Ventilation hose: to the activated carbon absorber; don't overdo it; to disconnect from the flange, press the fitting lock; clipped to fuel. tank.
13. Union nut: replace; 120 Nm; removal and installation using the T40068 A socket wrench.
14. Lip seal: replace; install dry.
15. Threaded ring.
16. Shut-off flange: to fuel level sensor 2 "G169".
17. -
18. Ventilation hose: To disconnect from the flange, press the fitting lock; clipped to fuel. tank.
19. Fuel level sensor 2 "G169": after installation, fill the car with at least 5 liters of fuel.
20. Suction pipe: after installation, fill the car with at least 5 liters of fuel.
21. Electrical plug connection: for fuel level sensor 2 "G169".
22. Fuel level sensor "G".

Removal and installation the suction line.

Removing the fuel supply unit. Remove fuel level sensor 2 "G169". Remove fuel level sensor 2 "G169" "pos. 3" together with the suction line "1" from the fuel hole. tank. When removing, ensure that the float of fuel level sensor 2 "G169" does not bend. Disconnect the plug "2" by pressing the lock "arrow A". Squeeze the clamp with pliers "arrow B" and remove the suction line.

Installation

Installation in reverse order. Prepare suction line "6" for installation. The plug connector "5" must be installed on the suction line "6" as shown in the figure. The plug connectors "2" and the suction line must be secured with 7 cable ties "pos. 3, 4, 7, 8". A seal must be installed. ring "1" on the suction line.

Install the suction line "1" until it clicks into place. Connect plug connector "2" and make sure it is securely fastened. Work carefully so as not to bend the float of the fuel level sensor 2 "G169" "pos. 3". Route the suction line from the trunk to the fuel hole. tank. Install the new sealing cuff over the flange and insert it into the groove on the fuel tank. tank. Insert your hand into the front opening of the fuel tank. tank and install the suction line in the mont. position. Install fuel level sensor 2 "G169". Install the fuel delivery module. Connect the battery, observing the precautions after connecting the battery. After installing the intake manifold, add at least 5 liters of fuel to the vehicle. Cars with independent heater: for fuel ventilation. turn on the independent heater at full power for 10 minutes from the main line to the dosing pump.

Fuel filter

1. Fuel line: To disconnect, press the fitting lock.
2. Sealing ring: replace.
3. Shut-off flange.
4. Fuel supply unit.
5. Fuel filter.
6. Ground cable: Install on the mounting plate.
7. Fuel pressure regulator mounting plate: with ground connection.

Dismantling

Removing the fuel supply unit. Disconnect the ground connection "arrow" from the fuel pressure regulator mounting plate.

Disconnect fuel line "1" by pressing the release button. Disconnect the plug connector "6" of the fuel pressure sensor "G". Disconnect the fuel plug connector. pump from pump. Remove flange "4" together with the fuel filter from the fuel supply module "3" in an upward direction. Unlock the 3 locking pins "5" by inserting the 3 release strips "7" (included in the fuel parts kit. filter) "arrow". Remove fuel. filter "2" from the flange downwards.

Installation

Installation in reverse order. Replace the seal. ring. Insert fuel. filter into the guides on the flange and press until it clicks. The fuel filter is installed in one position. Install the fuel delivery module.

Removal air from the system. nutrition

Thanks to the special design of the engine and fuel. pump built into the fuel. tank, remove air from the system. no power supply required. When the starter is turned on, air is removed from the system. automatically.

Activated carbon absorber

1. Ventilation hose: to the electromagnetic valve 1 of the activated carbon absorber "N80"; to disconnect, press the fitting lock; fixed under the bottom on brackets.
2. Sealing ring.
3. Valve.
4. Ventilation hose: from the fuel tank; to disconnect, press the fitting lock.
5. Ventilation duct: exits to the outside under the rear left fender liner.
6. Activated carbon absorber; installation location: in the rear left part of the car underbody under the trim.
7. Bolt: 16 Nm.

Dismantling

Remove the rear left underbody trim. Disconnect ventilation line "1" by pressing the release button. Disconnect the ventilation line "3" going to the fuel. tank by pressing the release button. Disconnect the ventilation line "5" going to the el. magnetic valve 1 of the activated carbon absorber "N80" by pressing the release button. Unscrew bolts "2, 4, 6" and remove the activated carbon absorber.