Fiat 1996 Brava Service Manual page 294

Bravo-Brava iffit
98 range
16v
Engine
Fuel system
BS
10.
CHECKS ON THE
FUEL SUPPLY CIRCUIT
THESE OPERATIONS SHOULD BE
CARRIED OUT IN THE PRESENCE
OF A SUITABLE VAPOUR PURIFI­
CATION AND EXHAUST SYSTEM.
Checking the fuel supply circuit pressure
Check the supply pressure and the seal of the
fuel supply system following the instructions
given below using equipment 1860955000,
fitted with two adaptors which should be
made as described below:
- adaptor (A): use a new type rapid attach­
ment female terminal and a length of pipe
contained in Kit no. 1860955003 and an
old type rapid attachment male terminal
contained in Kit no. 1860955001;
- adaptor (B): use a new type rapid attach­
ment male terminal and a length of pipe
contained in Kit no. 1860955003 and an
old type rapid attachment male terminal
contained in Kit no. 1860955001;
Configure the adaptors as illustrated in the
diagram.
The arrow indicates the the side to insert
in the test equipment 1860955000
(pressure gauge)
Discharging the fuel pressure in the supply circuit
The fuel supply circuit is kept at a constant pressure of about 3.2 bar even with the engine switched off;
therefore before carrying out any operations on the supply pipe, the pressure in the system must be dis­
charged, using adaptor no. 1870684000 and a special container to collect the excess fuel in.
Proceed as described below:
- Remove the protective cover from the attachment on the fuel manifold;
- introduce the male end of the adaptor into the container and fitthe rapid connector on the attachment
on the fuel manifold, as illustrated in the diagram; in this way the small amount of excess fuel, which
creates pressure, is discharged into the container and it is therefore possible to carry out the checks on
the fuel supply system;
- disconnect the adaptor from the attachment and refit the protective cover.
Copyright by Fiat Auto
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