Fuel Delivery and Air Induction: Service and Repair

Fuel system, draining
Special tools: 981 2270, 981 2273, 981 2282, 999 5480, 999 5484
Draining
Safety
First see Safety regulations for handling fuel.

Engagement





Remove the cover on the valve which is positioned on the fuel rail.

Connect adapter 999 5484 to fuel draining unit 981 2270, 981 2273 and 981 2282.

Connect the adapter to the valve on the fuel rail in the locked position (figure 1, valve closed).

Start the fuel drainage unit.

Unlock the adapter (illustration 2, valve open).

Raise the vehicle. See Jacking points, body.

Draining the fuel system





Remove the cover on the valve cap positioned at the fuel filter.

Connect venting hose 999 5480 to the valve prior to the fuel filter.

It takes approximately 2 minutes to drain the system.

Installation

Caution: Do not forget to reinstall the covers over the valves.

Reinstall the components in reverse order.