ENGINE - INSPECTION / ADJUSTMENT, RUNNING-IN TRIAL AND PERFORMANCE TEST
8 - 10
(3) Clean or replace when spraying badly
(a) Loosen the nozzle retaining nut and remove
the nozzle tip assembly. Clean the needle
valve and the nozzle tip body.
When removing the nozzle tip assembly, never
tap on the end of the assembly.
(b) Wash the needle valve and the nozzle tip body
in clean wash oil. Reassemble them in clean
light oil.
Note: The needle valve and the nozzle tip body are
precision machined parts. Handle with care and
never change their combination.
(c) Assemble the fuel injection nozzle, tightening
the nozzle retaining nut to the specified torque.
(d) If the fuel spray pattern is still not good,
replace the nozzle tip assembly.
Note: (a) Never touch the sliding surface of the needle
valve with your hands.
(b) If the nozzle tip assembly is replaced, remove
the seal peel (synthetic resin film) from the
new nozzle tip assembly and slide the nozzle
and needle valve in clean wash oil to
completely remove the anti-corrosive agent.
(4) Installing the fuel injection nozzles
(a) Install a new gasket onto the fuel injection.
(b) Insert the fuel injection nozzle into the
cylinder head, and tighten to the specified
torque.
Cleaning the fuel injection nozzle tip
components
Needle
valve
Nozzle tip
body
Tightening the retaining nut
Installing the fuel injection nozzle
Tightening torque:
34.3 to 39.2 N
m
(3.5 to 4.0 kgf
m)
[25.3 to 28.9 lbf
ft]
Replace: Gasket
Tightening torque:
49.0 to 58.8 N㨯m
(5.0 to 6.0 kgf㨯m)
[36.2 to 43.4 lbf㨯ft]
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