Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Audi A4 Base, 4D Sedan, 3.0 TFACTORY OEM SERVICE PROCEDURE
Fuel Supply System
- 20 - Fuel supply system
- Notes for performing work on fuel supply system
- Fuel tank, vehicles with front wheel drive up to 06.03
- Fuel tank with attachments, assembly overview
- Fuel tank, draining
- Fuel tank with attachments, removing and installing
- Fuel delivery unit and fuel level sensor, assembly overview
- Fuel pump electrical, checking
- Delivery rate of fuel pump, checking (vehicles with 1.8L turbo engine)
- Delivery rate of fuel pump, checking (vehicles with 6-cyl. MPI-engine)
- Fuel delivery unit, removing and installing
- Fuel Level Sensor G , checking
- Fuel Level Sensor G , removing and installing
- Fuel Tank Lock Switch F314 , checking
- Fuel tank, vehicles with front wheel drive from 07.03 to 10.04
- Fuel tank with attachments, assembly overview
- Fuel tank, draining
- Fuel tank with attachments, removing and installing
- Fuel delivery unit and Fuel level sensor, assembly overview
- Fuel pump electrical, checking
- Delivery rate of fuel pump, checking (vehicles with 1.8L Turbo engine and 6-cyl. MPI-engine)
- Fuel delivery unit, removing and installing
- Fuel Level Sensor G , testing
- Fuel Level Sensor G , removing and installing
- Fuel Tank Lock Switch F314 , checking
- Fuel tank, vehicles with front wheel drive as of 11.04
- Fuel tank with attachments, assembly overview
- Fuel tank, draining
- Fuel tank with attachments, removing and installing
- Fuel delivery unit and Fuel level sensor, assembly overview
- Fuel pump electrical, checking
- Fuel Pump (FP) Control Module J538 , checking (vehicles with FSI engine)
- Delivery rate of fuel pump, checking (vehicles with 4-cyl. TFSI-engine)
- Delivery rate of fuel pump, checking (vehicles with 6-cyl. MPI-engine)
- Delivery rate of fuel pump, checking (vehicles with 6-cyl. FSI-engine)
- Fuel delivery unit, removing and installing
- Fuel pump adaptation after replacing fuel delivery unit, (vehicles with 4-cyl. TFSI engine)
- Fuel level sensor G , checking
- Fuel level sensor G , removing and installing
- Fuel tank, vehicles with all wheel drive up to 06.03
- Fuel tank with attachments, assembly overview
- Fuel tank, draining
- Fuel tank with attachments, removing and installing
- Fuel delivery unit and Fuel level sensor, assembly overview
- Fuel pump electrical, checking
- Fuel pump delivery quantity, checking (vehicles with 1.8L Turbo engine)
- Delivery rate of fuel pump, checking (vehicles with 6-cyl. MPI-engine)
- Fuel delivery unit, removing and installing
- Fuel Level Sensor G , checking
- Fuel Level Sensor G , removing and installing
- Fuel Level Sensor 2 G169 , checking
- Fuel Level Sensor 2 G169 , removing and installing
- Suction jet pump, function
- Suction jet pump in left fuel tank chamber, removing and installing
- Fuel Tank Lock Switch F314 , checking
- Fuel supply system, vehicles with all wheel drive from 07.03 to 10.04
- Fuel tank with attachments, component overview
- Fuel tank, draining
- Fuel tank with attachments, removing and installing
- Fuel delivery unit and fuel level sensor, assembly overview
- Fuel pump electrical, checking
- Fuel Pump (FP) delivery quantity, checking
- Fuel delivery unit, removing and installing
- Fuel Level Sensor G , checking
- Fuel Level Sensor G , removing and installing
- Fuel Level Sensor 2 G169 , checking
- Fuel Level Sensor 2 G169 , removing and installing
- Suction jet pump, function
- Suction jet pump in left fuel tank chamber, removing and installing
- Fuel Tank Lock Switch F314 , checking
- Fuel supply system, vehicles with all wheel drive as of 11.04
- Fuel tank with attachments, assembly overview
- Fuel tank, draining
- Fuel tank with attachments, removing and installing
- Fuel delivery unit and fuel level sensor, assembly overview
- Fuel pump electrical, checking
- Fuel Pump (FP) Control Module J538 , checking (vehicles with 4-cyl. TFSI engine)
- Fuel Pump (FP) Control Module J538 , checking (vehicles with 6-cyl. and 8-cyl. FSI engine)
- Fuel Pump (FP) Control Module J538 , removing and installing
- Fuel pump delivery quantity, checking (vehicles with 4-cyl. TFSI-engine)
- Fuel pump delivery quantity, checking (vehicles with 6-cyl. FSI-engine)
- Fuel pump delivery quantity, checking (vehicles with 8-cyl. MPI-engine)
- Fuel pump delivery quantity, checking (vehicles with 8-cyl. FSI-engine (Audi RS4))
- Fuel delivery unit, removing and installing
- Fuel pump adaptation after replacing fuel delivery unit, (vehicles with 4-cyl. TFSI engine)
- Fuel Level Sensor G , checking
- Fuel Level Sensor G , removing and installing
- Fuel Level Sensor 2 G169 , checking
- Fuel Level Sensor 2 G169 , removing and installing
- Suction jet pump
- Suction jet pump, removing and installing
- Fuel filter, servicing
- Fuel system, bleeding (1.8L Turbo engine)
- EVAP canister/leak detection system, servicing (Front and all wheel drive vehicles)
- EVAP canister/leak detection system, assembly overview
- Evaporative emissions (EVAP) canister, removing and installing
- EVAP canister/leak detection system, 8-cyl. FSI engine (Audi RS4), component overview
- EVAP canister, removing and installing (8-cyl. FSI engine (Audi RS4))
- Hose routing, EVAP canister/leak detection system - 1.8L Turbo engine
- Hose routing, EVAP canister/leak detection system 6-cyl. (MPI-engine)
- Hose routing, EVAP canister/leak detection system (6-cyl. FSI-engine)
- Hose routing, EVAP canister/leak detection system (8-cyl. MPI-engine)
- Hose routing, EVAP canister/leak detection system (8-cyl. FSI engine (Audi RS4))
- Leak detection system
- Diagnostic leak test, performing
- Fuel supply and tank ventilation systems, checking for leaks
- EVAP system, checking using tester KLI 9210
- Leak Detection Pump (LDP) V144 , checking (vehicles with MPI-engine)
- Leak Detection Pump (LDP) V144 , checking (vehicles with FSI and TFSI-engine)
- Leak Detection Pump (LDP) V144 , removing and installing
- Accelerator linkage, servicing
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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