audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Accelerator mechanism > < Bleeding fuel supply line leading to metering pump - vehicles with auxiliary heater

A4 Mk3

Checking fuel system for leaks
Checking fuel system for leaks
Observe rules for cleanliness → Chapter.
A leaking fuel system can cause:
t  Foam build-up or air bubbles in the supply line.
t  Lack of power, misfiring.
t  Starting problems.
Checking fuel system and fuel lines for leaks
–  Check whether the seals on the flanges are damaged and whether the union nuts on the fuel tank flanges are properly tightened.
–  Perform a visual check on all fuel lines, fuel tank components and hose connections:
t  Fuel lines to engine
t  Fuel lines to fuel tank
t  Fuel cooler
t  Fuel filter
t  Fuel tank
   

Accelerator mechanism > < Bleeding fuel supply line leading to metering pump - vehicles with auxiliary heater