1.4 MPI engine (EA111) · Fuel supply system · Parts of fuel supply system

Safety regulations for working on fuel supply

When removing and installing fuel gauge sender or fuel pump (fuel delivery unit) from a full or partly full fuel tank, observe the following:

Warning

Fuel supply lines are under pressure! Wear eye protection and gloves to avoid injuries and skin contact. Wrap a cloth around the connection before loosening hose connections. Then release pressure by carefully pulling hose off connection.

Even before work starts, the extraction hose of a fume extraction system which is switched on must be placed in the vicinity of the assembly opening of the fuel tank to extract any escaping fumes. If no exhaust gas extraction system is available, a radial fan with a displacement greater than 15 m³/h can be used providing that motor is not in air flow.
Prevent skin contact with fuel! Wear fuel-resistant gloves!
For safety reasons, the fuse for the fuel pump must be removed from the fuse holder before opening the fuel system. Otherwise, the fuel pump could be activated by the driver door contact switch. Fuse assignment ⇒ Current flow diagrams, Electrical fault finding and Fitting locations