SEN00455-01 30 Testing and adjusting
16 114E-3 Series
a If the drop exceeds the standard
value, clogging of the fuel filter is sus-
pected.
4) After finishing testing, remove the testing
tools and return the removed parts.
3 Fuel pressure pickup plug:
20 – 22 Nm {2.0 – 2.2 kgm}
6. Testing fuel lift pump outlet pressure (sup-
ply pump section)
1) Remove fuel pressure pickup plug (2) of
the supply pump.
2) Connect M10 computer check fitting G4 to
gauge G3.
3) Turn the starting switch ON, operate fuel
lift pump (5), and measure the fuel lift
pump outlet pressure.
Reference: Fuel lift pump (5) is installed to
cooling plate (7) on the back side of
engine controller (6).
a The fuel lift pump operates for 30 seconds
after the starting switch is turned ON and
then stops. Measure the pressure while
the pump is operating.
a If the fuel lift pump outlet pressure is in the
following standard range, it is normal.
q Standard fuel lift pump outlet pressure
(supply pump section):
Min. 34 kPa {0.35 kg/cm
2
}
a If the fuel lift pump outlet pressure is not in
the standard range, perform the following
checks.
q Check that fuel is in the fuel lift pump.
q If fuel is not in the fuel lift pump just
after the fuel filter is replaced or a fuel
system part is removed and returned,
operate the fuel lift pump 3 – 4 times
with the starting switch to bleed air
from the fuel circuit and fill the pump
with fuel and then measure the outlet
pressure again.
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