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| caution |
Never touch the injection
spray that is injected from the nozzle.
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1.Install the injection
nozzle to a nozzle tester.
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2.Move the lever of the
nozzle tester 2 - 3 times to inject fuel and to bleed
the air.
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3.Gently press down the
lever of the nozzle tester, and take a reading of the
indication
value on the pressure gauge at the point where the needle
slowly rises and then suddenly drops.
Standard
value (Fuel injection initial pressure):
14,710
- 15,690 kPa
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4.If the fuel injection
initial pressure is outside the standard value, disassembly
the nozzle holder to clean it, and the change the thickness
of the shim to adjust the fuel injection initial
pressure.
| note |
1: For disassembly, reassembly
and adjustment of the nozzle holder, refer to  .
2:
When the shim thickness is increased by 0.1 mm,
the fuel injection initial pressure
increases by approximately 1,177 - 2,157
kPa.
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1.Move the lever of the
nozzle tester rapidly (4 - 6 times per second) to
eject
the fuel continuously. Check to be sure that the injection
spray comes out evenly in a cone shape
(injection spray comes out evenly in a cone shape (injection
spray angle is 0°). The
injection spray patterns shown in the illustration at left
are wrong.
- Injection angle is tool large
- Bias
- Intermittent fuel injection
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2.Check to be sure that no
fuel drips after injection is completed.
3.If
there are any drips, disassemble the nozzle, clean it and
reinspect, or replace
the nozzle.
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1.Gently raise the lever of
the nozzle tester until the pressure inside the nozzle
(value
displayed on pressure gauge) becomes 12,750 - 13,730
kPa, and after holding this pressure
for approximately 10 seconds, check to be sure that there
are no fuel leaks from the nozzle.
2.If there are
any leaks, disassemble the injection nozzle, clean it and
re-inspect,
or replace the nozzle.
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