Fuel Injector; Inspection; Removal - Suzuki DF 90 Service Manual

5-12 FUEL SYSTEM

FUEL INJECTOR

INSPECTION

1. Using sound scope or equivelent, check operating sound
of fuel injector when engine is running or cranking.
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
measure resistance.
09930-99320 : Digital tester
Tester range : Ω Ω Ω Ω Ω (Resistance)
Fuel injector resistance : 11.0 – 16.5 Ω Ω Ω Ω Ω
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 5-3.
2. Loosen clamp and place a large cloth over end of fuel feed
hose.
Slowly pull fuel feed hose from fuel delivery pipe.
Drain any excess fuel in hose into a small container.
3. Disconnect four fuel injector connectors.
4. Remove bolts and low fuel filter bracket.
5. Remove two bolts and fuel delivery pipe (with fuel injec-
tors).
A small amount of fuel may be released when the fuel
injector is removed from delivery pipe.
Place a shop cloth under fuel injector before removal
to absorb any fuel released.
Dispose of fuel soaked cloth in appropriate container.
6. Remove each injector from delivery pipe.
1. Fuel feed hose 1. Fuel f Fuel feed hose eed hose
1 1