Suzuki GSX-R750 Service Manual page 167

Step
1 1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. Refer to "Fuel Tank
Removal and Installation in Section 1G (Page 1G-9)".
3) Check the secondary fuel injector coupler (1) for loose or
poor contacts.
If OK, then measure the injector resistance.
4) Disconnect the injector coupler and measure the
resistance between terminals.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
Injector resistance
11 – 13 Ω at 20 °C (68 °F)
(Terminal – Terminal)
Action
1
I837H1110075-01
(A)
I837H1110076-01
Engine General Information and Diagnosis:
Yes
Go to Step 2.
1A-95
No
Replace the injector
with a new one. Refer to
"Throttle Body
Disassembly and
Assembly in Section 1D
(Page 1D-11)".