1G-21 Fuel System:
Separator Cover and Case
Inspect the separator cover and case.
Replace if cracked, damaged or other abnormal
conditions.
NOTE
Separator cover and case are a set.
If any repair is required on the cover or case,
replace them as a fuel vapor separator
assembly.
Fuel Pressure Regulator
Inspect the fuel pressure regulator for damage or
corrosion.
Check the fuel pressure regulator operation.
Special tool
(A): 09952–99310 (Hand air pump)
(B): 09940–44121 (Air pressure gauge)
(C): 09940–44130 (Attachment)
(D): 09912–58490 (3-way joint & hose)
1) Connect the special tools to the inlet side of the
regulator as shown in the figure.
2) Pump air into the regulator using pump until air is
released through outlet side.
3) Read the pressure on the gauge when air is
released.
If out of specification, replace regulator.
Regulator operating pressure
Standard: 240 – 270 kPa (2.4 – 2.7 kg/cm
2
, 34.1 –
38.4 psi.)
Fuel Injector Inspection with Injector in place
Z9J0111706010
1) Using a sound scope or equivalent, check the
operating sound of the fuel injector when the engine
is running or cranking.
Injector operating sound cycle should vary according
to engine speed.
If no sound or an unusual sound is heard, check
injector circuit (wire or connector) or injector.
2) Disconnect the lead wire connector from the fuel
injector.
3) Connect a digital tester between the terminals of the
injector and measure resistance.
If out of specification, replace the fuel injector.
Special tool
: 09930–99320 (Digital tester)
Tester knob indication
Resistance (Ω)
Fuel injector resistance
Standard: 10 – 14.0 Ω
4) Connect the lead wire connector to the fuel injector
securely.
I9J011170052-01
(A)
(B)
(C)
(D)
I9J011170021-01
1. Injector body
1
“click”
I9J011170053-03
I9J011170054-01
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