Safety valve

SAFETY VALVE

The purposes of this valve are the following:

• Ventilation of the fuel tank (together with the multi-purpose valve of the fuel vapour recirculation system)
• Fuel vapour release (only if the multi-purpose valve fails to operate).

The vacuum in the fuel tank determined by the withdrawal of fuel is countered by the opening of the safety valve set at ≤ 0.020 bar.

If the pressure inside the fuel tank exceeds 0.065 ÷ 0.085 bar, the valve opens to relieve part of the fuel vapour pressure to the atmosphere.

REMOVAL/REFITTING

• Remove the right rear wheel.

1. Working from the right rear wheel arch, slacken the fastening clamps and remove the safety valve.

FUEL FILTER

The filter is inserted in the fuel delivery pipe to the injectors, under the car floor, next to the fuel tank.

It is formed of an outer aluminium cover and an inner polyurethane support which carries a paper element with a high filtering power (~ 5 mm) and a surface of appr. 1400 cm².

Fuel filtering is indispensable to ensure correct operation of the electronjectors, given their sensitivity to foreign particles contained in the fuel circuit.

There is an arrow on the outer filter cover which indicates the direction in which the fuel flows and therefore the correct assembly position.

1. Paper filter
2. Fabric filter
3. Mesh

REPLACEMENT

1. Disconnect the fuel inlet pipe fitting from the filter.
2. Disconnect the fuel outlet pipe fitting from the filter.
3. Slacken the fastening clamp and remove the fuel filter.

21 ÷ 26 Nm
2.2 ÷ 2.7 kgm

30 ÷ 37 Nm
3.0 ÷ 3.8 kgm