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Item 64938
8. Start the engine and allow it to
idle. Check all connections for
leaks. Read the Gauge and
compare the result with the pressure
values in the service manual.
9. Stop the engine and turn
the ignition OFF.
10. With free end of Bleed-Off Hose in a
suitable container, press button on
side of Bleed-Off Assembly slowly
to depressurize the fuel system.
Refer to Safety Information before
removing Tester from vehicle.
11. Reconnect vehicle’s fuel line and
tighten all clamps securely. Check
all connections for leaks.
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Gauge (1)
Pressure Testing
and Bleed-Off
Assembly (2)
Adapters
(32, 33, 34, 35, 37,
38, 40, 41, 42, 43,
44, 45, or 46)
and O-Rings from
Seal & Service
Kit (4)
CIS/TBI Testing
Assembly with
Shutoff Valve (3)
Figure L
1. Turn off the ignition.
2. Clean the top of the fuel distributor to
keep dirt from entering the fuel system.
3. Relieve the fuel pressure. Refer
to the vehicle’s service manual for
specific pressure relief procedures.
4. The CIS system has a primary circuit
with pressure regulated at the fuel
distributor. This is known as
supply
pressure, primary pressure, or line
pressure
. The side of the Tester
without
the shutoff valve is connected to this
circuit. The other circuit is known as
the
control circuit
. This contains the
control pressure regulator, known
as the
warm-up compensator
. The
side of the Tester
with
the shutoff
valve is connected to this circuit.
5. Connect the Gauge to the Pressure
Testing and Bleed-Off Assembly.
6. Install Adapter(s) #32, 33, 34, 35, 37,
38, 40, 41, 42, 43, 44, 45, or 46 and
O-Ring from the #4 Seal and Service Kit
to the engine as required. Hand tighten
only. Then connect Hoses to Adapters.
7. Attach the female quick coupler on
the Pressure Testing and Bleed-Off
Assembly to the male quick coupler
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with Shutoff Valve. With free end
of Bleed-Off Hose in a suitable
container, press button on side
of Bleed-Off Assembly slowly to
release any air in the test Hose.
8. Refer to Safety Information before
removing Tester from vehicle. Remove
Tester and Adapters from vehicle.
Reconnect vehicle’s fuel injection
lines to original condition. Start
the vehicle and check for leaks.