Service Manual

ISB, ISBe and QSB (Common Rail [...] EFC Actuator Valve
Section 5 - Fuel System - Group 05 Page 5-5
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With the keyswitch ON and the engine cranking, check
the high pressure injection pump.
Check the high pressure injection pump fuel flow as
follows:
• Disconnect the high pressure fuel line to the fuel rail
from the high pressure injection pump.
• Connect a clear hose to the outlet of the high pressure
injection pump.
• Place the high pressure fuel clear hose into an empty
bucket.
• Crank the engine for 30 seconds and measure the fuel
pump flow.
Minimum fuel pump flow is 75 ml [2.5 oz] in 30 seconds at
125 rpm or 90 ml [3.04 oz] in 30 seconds at 150 rpm for 4-
cylinder and 6-cylinder engines.
If the minimum fuel flow is not achieved, the high-
pressure injection pump is defective. Refer to Procedure
005-016 in Section 5.
If the minimum fuel flow is achieved, the electronic fuel
control (EFC) actuator is defective.
Remove
Remove the electrical connector
Remove the three capscrews.
Remove the EFC actuator by twisting and pulling outward.
Install
CAUTION
Do not pause more than 2 minutes between torque
steps 1 and 2. This can cause the capscrews not to
maintain their torque value. Leakage or engine
damage can result.
NOTE: Lubricate the new o-ring with clean oil before
installation.
Install a new o-ring on the electronic fuel control actuator.
Install the electronic fuel control actuator by twisting and
pushing inward until flush with the mounting surface.
NOTE: Be sure the electronic fuel control actuator flange
is flush with the mounting surface on the fuel pump before
tightening the capscrews.
Torque Value:
Step 1 3 N•m [ 27 in-lb ]
Step 2 7 N•m [ 62 in-lb ]
Install the electrical connector.