Fuel Manifold (Cb 168); Carbon Filter - Fiat 1998 Marea Service Manual

Engine
Fuel system
10.
40
Marea-Marea

FUEL MANIFOLD (CB 168)

The fuel manifold is fastened to the inner part
of the intake manifold. Its function is to direct
fuel to the injectors.
The fuel manifold is pressure cast in alumini-
um and incorporates injector seats.
The fuel intake is fastened using bolts with
tapered seals.

CARBON FILTER

CUT-OFF VALVE
These components form part of the fuel evap-
oration control and vapour recovery system.
They are located in the right wheel arch com-
partment and can be reached by removing
the rear part of the right front wheel arch
compartment trim.
1. Fuel vapour cut-off solenoid
2. Carbon filter
Carbon filter
This consists of carbon granules (4) that trap fuel
vapour entering intake (5).
Warm flushing air enters intake (1), through paper
filter (3) and flows over the carbon granules to re-
move fuel vapours and carry them toward the outlet
(2) and then on toward the cut-off valve.
Air entering through intake (5) may also be pulled
back by a vacuum in the tank, when it serves to ven-
tilate the tank. Partition (6) ensures that the flush-
ing air flows over all the carbon granules and pro-
motes the release of fuel vapour toward the inlet
manifold.
Two springs (7) allow the mass of granules to ex-
pand when the pressure increases.
Weekend©^
1998 range
AND FUEL VAPOUR
Publication no. 506.763/09