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F8QT ENGINE -
Fuel Injection Nozzle
11A-18-2
INSPECTION
FUEL INJECTION NOZZLE
(1) Connect the nozzle tester to injection nozzle
3
and carry
out the tests described below.
Caution
D
Before starting the tests, operate the lever of the
nozzle tester two or three times to bleed air from
the nozzle.
Valve opening pressure test
(1) Slowly push down the nozzle tester lever. The pressure
gauge pointer will gradually rise and then deflect suddenly
at a certain value. Make a note of the pressure at which
the pointer suddenly deflects.
(2) If this pressure value deviates from the standard value,
disassemble the nozzle. Clean and reassemble the
nozzle. Then adjust to the specified pressure by fitting
a different shim
9
.
(3) A difference in shim thickness of 0.05 mm changes the
opening pressure by 5 kPa. Shims are available in
thicknesses from 1.00 to 1.95 mm, increasing by
increments of 0.05 mm.
(4) Fit a new fuel injection nozzle
3
if the pressure value
is still incorrect after adjustment.
Spray pattern test
(1) Move the nozzle tester lever with a fast short stroke (four
to six strokes per second) so that a continuous spray
of fuel is obtained from the nozzle.
A: The fuel exits the nozzle in a straight thin spray pattern
(correct).
B: Excessive spray angle (incorrect).
C: Spray deflected to one side (incorrect).
D: Interrupted spray form (incorrect).
(2) If necessary, disassemble and clean the injection nozzle
and repeat thetest. Fita newinjection nozzleif theproblem
persists.
(3) Check that the nozzle does not drip after injecting fuel.
Caution
D
Do not expose your hands or any other parts of
your body to the injection nozzle spray.
PWEE9602
E
July 1996Mitsubishi Motors Corporation
4ME0206
4ME0207
A
BCD