Fuel injection
9 - 50
Check if the pressure reduces at the same rate as when the system is not squeezed.
Proceed with the system
seal control
Activate the pump for 30 seconds using
diagnosis tester 020460Y.
After the pump stops wait
for 3 minutes.
Check the system pressure.
Fuel pressure = greater than 200 KPa
(2 BAR)
The pressure is lower
Carefully check the tension with the
pump under pressure.
If tension is greater than 12 V replace
the pump (see page 9-54 overhaul of
the pump support).
System seal is good.
Repeat the test. When the pump stops, using long,
flat-tonged pliers, squeeze the return duct acting
only on the extention of the special tool. This action
leads to an increase in fuel pressure.
NO
YES
The pressure reduces much more slowly
Replace the pressure regulator (see page 9-54
overhaul of the pump support).
Check system seal again
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