BASIC SERVICE PROCEDURE — Fuel Pressure Release; Fuel Pressure Check

EF & EC-7024prose procedure

Fuel Pressure Release

CG10, CGA3

WARNING

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.

WITH CONSULT-II

Fuel pressure release with CONSULT-II

1
Start engine.
2
Perform "FUEL PRES RELEASE" in "WORK SUPPORT" mode with CONSULT-II.
SEF214Y
3
After engine stalls, crank it two or three times to release all fuel pressure.
4
Turn ignition switch OFF.

WITHOUT CONSULT-II

Fuel pressure release without CONSULT-II

1
Remove fuse for fuel pump. Refer to fuse block cover for fuse location.
2
Start engine.
3
After engine stalls, crank it two or three times to release all fuel pressure.
4
Turn ignition switch OFF and reconnect fuel pump fuse.

Fuel Pressure Check

CAUTION

- When reconnecting fuel line, always use new clamps. - Make sure that clamp screw does not contact adjacent parts. - Use a torque driver to tighten clamps. - Use Pressure Gauge to check fuel pressure. - Do not perform fuel pressure check with system operating. Fuel pressure gauge may indicate false readings.

Fuel pressure check

1
Release fuel pressure to zero.
2
Disconnect fuel hose between fuel filter and fuel tube (engine side).
3
Install pressure gauge between fuel filter and fuel tube.
NEF145A
4
Start engine and check for fuel leakage.
5
Read the indication of fuel pressure gauge.

Specification	Value
At idle speed — With vacuum hose connected(2.35 bar, 2.4 kg/cm², 34 psi)	Approximately 235kPa
At idle speed — With vacuum hose disconnected(2.94 bar, 3.0 kg/cm², 43 psi)	Approximately 294kPa

At idle speed — With vacuum hose connected(2.35 bar, 2.4 kg/cm², 34 psi)

Approximately 235kPa

At idle speed — With vacuum hose disconnected(2.94 bar, 3.0 kg/cm², 43 psi)

Approximately 294kPa

If results are unsatisfactory, perform Fuel Pressure Regulator Check, EC-7025.

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