1-S65
L3130 · L3430 · L3830 · L4630 · L5030, WSM
ENGINE
(B) Injection Nozzle
CAUTION
• Check the nozzle injection pressure and condition after confirming that there is nobody standing in the
direction the fume goes. If the fume from the nozzle directly contacts the human body, cells may be
destroyed and blood poisoning may be caused.
Nozzle Injection Pressure
1. Set the injection nozzle to the nozzle tester.
2. Slowly move the tester handle to measure the pressure at which
fuel begins jetting out from the nozzle.
3. If the measurement is not within the factory specifications,
replace the injection nozzle assembly.
W1037197
Nozzle Spraying Condition
1. Set the injection nozzle to a nozzle tester (Code No. 07909-
31361), and check the nozzle spraying condition.
2. If the spraying condition is defective, replace the injection nozzle
assembly.
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Valve Seat Tightness
1. Set the injection nozzle to a nozzle tester (Code No. 07909-
31361).
2. Raise the fuel pressure, and keep at 12.75 MPa (130 kgf/cm
2
,
1849 psi) for 10 seconds.
3. If any fuel leak is found, replace the injection nozzle assembly.
W1088949
Fuel injection pressure Factory spec.
13.73 to 14.71 MPa
140 to 150 kgf/cm
2
1991 to 2133 psi
(a) Good (b) Bad
Valve seat tightness Factory spec.
No fuel leak at
12.75 MPa
130 kgf/cm
2
1849 psi
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