FUEL SYSTEM
TESTING OPENING PRESSURE OF NOZZLE
1.
Move the tester hanctle up and down to prime fuel. Measure the pressure of fuel jetting from
the
nozzle tip.
2.
If the measurement is not within the reference value, adjust with the adjustment washer inside
the
nozzle holder. Each extra
0.1
mm (0.0039 in.) of washer thickness causes
an
approximate
980.6
kPa
(10
kgf/cm2, 142.2 psi) increase in fuel injection pressure.
DANGER: Be careful
not
to
come into direct contact with the injected fumes. The fumes
destroy any
cells they may touch. They may also cause blood poisoning. See engine
specifications.
CHECKING FUEL TIGHTNESS OF NOZZLE
VALVE
SEAT
1.
Apply a pressure.
2.
After keeping the nozzle under this pressure for
10
seconds, check to see if fuel leaks from
the
nozzle valve seat.
3.
If fuel should leak, replace the nozzle piece. See engine specifications.
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