Marea-Marea Weekend W>
16v
99 range
Engine
Fuel system
10.
If there is a decrease in pressure greater than the figures given above, check the seal of the system in the
section upstream of the manifold and, if there are no leaks or damage to the fuel supply pipe, replace the
electric fuel pump drip tray assembly because the pressure regulator is housed in this unit and CANNOT
be replaced.
If the pressure, after having repeated the test, exceeds the recommended figure and is considerably higher,
replace the electric fuel pump because there iare operating faults in the pressure regulator.
If the pressure corresponds to the recommended figure, check the seal of the fuel manifold and the injec-
tors, following the procedure described in the next paragraph.
Injector seal check
4FM5PJ01
1. Complete electric pump
2. Fuel supply pipe
3. Adaptor (A)
4. Test equipment No. 1860955000
5. Adaptor (B)
6. Fuel manifold
7. Rapid attachment connector
8. Injectors
Keep the test equipment configured as described in the previous paragaph, close valve (b), keeping valve
(c) closed and valve (a) in the fully open position.
Turn the ignition key to the ON position and check on the pressure gauge (e) that, after having increased
to a value of around 3.5 bar, the pressure settles down at around 3.2 bar, then close the valve (a) and
check that the pressure remains constant for at least one minute; if this is not the case, there is a leak
from one or more of the injectors.
Copyright by Fiat Auto
45
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