Fuel Cut Operation Inspection - Suzuki GRAND VITARA Owner's Manual

1G-4 Fuel System:
6) After checking fuel pressure, remove fuel pressure
gauge.
WARNING
!
As fuel feed line is still under high fuel
pressure, make sure to release fuel pressure
according to the following procedures.
• Place fuel container under joint.
• Cover joint with rag and loosen joint nut
slowly in order to release fuel pressure
gradually.
7) Remove special tools from fuel delivery pipe and fuel
feed hose.
8) Connect fuel feed hose to fuel delivery pipe and
clamp it securely.
9) With engine OFF and ignition switch ON, check for
fuel leaks.

Fuel Cut Operation Inspection

NOTE
Before inspection, make sure that gear shift
lever is in neutral position (shift select lever
is "P" range for A/T vehicle), A/C is OFF and
parking brake lever is pulled all the way up.
1) Warm engine up to normal operating temperature.
2) While listening to sound of injector (2) by using
sound scope (1) or such, increase engine speed to
higher than 3,000 r/min.
3) Check to make sure that injector operation sound is
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stop when throttle valve is closed instantly and it is
heard again when engine speed is reduced to
approx. 2,000 r/min or less.
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