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F8QT ENGINE -
Fuel Injection Nozzle
11A-18-3
Leakage test
(1) Increase the pressure to 11 MPa by operating the lever
of the nozzle tester. Maintain the pressure for 10 seconds.
No fuel must dribble out of the nozzle during this test.
(2) If dribbling startswithin this 10 secondperiod, disassemble
and clean the injection nozzle
3
and repeat the test. Fit
a new injection nozzle if the problem persists.
REMOVAL SERVICE POINTS
A
A
"
FUEL INJECTION NOZZLE DISASSEMBLY
Caution
D
Remove any carbon deposits from the injectionnozzle
3 before starting disassembly, assembly and
adjustment. Before disassembly, test the fuelinjection
nozzle for abnormal injection pressure, abnormal
spray pattern and leakage. If the fuel injection nozzle
is operating correctly, it does not have to be
disassembled.
A
B
"
NEEDLE VALVE / NOZZLE TIP REMOVAL
Caution
D
Do not touch the sliding surface A of the needle valve
10.
D
Make sure that the original combination of needle
valve 10 and nozzle tip 11 are reassembled.
CLEANING
NEEDLE VALVE / NOZZLE TIP
(1) Wash the removed needle valve
10
and nozzle tip
11
in clean paraffin and remove any carbon deposits with
the tool. Proceed as follows:
(a) Remove the carbon deposits on the tip of the needle
valve
10
with t he small cleaning rod
B
(special tool).
Caution
D
Do not use a wire brush of other hard metal
tools for cleaning.
(b) Remove the carbon deposits in the oil hole
C
of the
nozzle tip
11
with the scraper tool
D
.
PWEE9602
E
July 1996Mitsubishi Motors Corporation
4ME0208
4ME0209
10
A
4ME0210
10
B
4ME0211
11
D
C