Fuel Injector; Inspection; Removal - Suzuki DF 40 Service Manual

FUEL INJECTOR

INSPECTION

1. Using sound scope or equivelent, check operating sound of
fuel injector when engine is running or cranking.
The 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 lead wire connector from fuel injector.
3. Connect digital tester between terminals of injector and
check resistance.
09930-99320 : Digital tester
Tester range : W W W W W (Resistance)
Fuel injector resistance : 11.0 – 16.5 W W W W W
If out of specification, replace fuel injector.
4. Connect lead wire connector to fuel injector securely.

REMOVAL

1. Relieve fuel pressure according to procedure described on
page 5-2.
2. Disconnect lead wire connectors from each injector.
3. Remove the screw securing the fuel injector stopper.
4. Remove fuel injector stopper and fuel injector.
A small amount of fuel may be released when the fuel
injector is removed from intake manifold.
Place a shop cloth under fuel injector before removal
to absorb any fuel released.
Dispose of fuel soaked cloth in appropriate container.
FUEL SYSTEM 5-12