FUEL SYSTEM
TESTING OPENING PRESSURE
OF
NOZZLE
1.
Move
the tester handle
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 arso 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.
133
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