Fiat Bravo Service Manual page 262

Engine
Fuel system
Bravo-Brava ^
16v
10.
FUEL CIRCUIT PRESSURE CHECKS
Checking fuel regulation pressure
Disconnect the pipe coming from the filter (shown by the arrow) from the injector fuel manifold.
Place pressure gauge 1895890000 and two taps (1) and (2) between the end of the disconnected pipe
and the fuel manifold, as illustrated in the diagram.
Supply the electric pump with the engine switched off through the "active diagnosis" function of the
F/L Tester.
Alternatively, proceed as follows:
- extract the pump relay from the socket
- make a connection as shown in the diagram using a suitable bridge for this purpose.
The pressure reading on the gauge should stabilize, in these conditions, at 3.0 bar ± 0.2 bar.
If the pressure is too low, carry out the next test.
Checking maximum fuel supply pressure
(or efficiency of electric pump)
Keeping the same connections as for the pre­
vious test, close the tap (2) located down­
stream of the pressure gauge, operate the
electric pump with the engine switched off,
as described for the previous test: the pres­
sure should reach 5 bar and not exceed 7 bar
(pump safety valve setting). If this is not the
case, replace the electric pump because it is
defective.
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Print no. 506.670/07