Checking Fuel Supply Circuit - Fiat Bravo Service Manual

Engine
Fuel system
10.
C H E C K I N G F U E L S U P P L Y C I R C U I T
The last operation is carried out by selecting "fuel pump" test on a Fiat/Lancia tester.
Under these conditions, the pressure gauge reading should stabilise at 3.0 bar.
If pressure is insufficient, carry out the test 2.
58
T e s t 1
Testing fuel regulation pressure
- Disconnect fuel delivery line to mani-
fold from arrowed fitting.
- Interpose
1895890000 between the discon-
nected pipe end and the fuel manifold
with cocks (A) and (B) open.
- Activate fuel pump with engine off.
P4A58CJ01
T e s t 2
Testing maximum fuel feed pres-
sure (or pump efficiency)
Same connections as previous test.
- Close fuel cock lever (A);
- operate the pump with the engine off,
as
should not exceed 7 bar (pump pres-
sure relief valve setting). Otherwise,
replace the pump because it is defec-
tive.
P4A5SCJ02
Bravo-Brava
pressure
described previously:
Publication
10 16v
gauge
pressure
no. 506.670