FUEL SYSTEM (PGM-FI)
5-3
SERVICE INFORMATION
GENERAL
• Work in a well ventilated area. Smoking or allowing flames or sparks in the work area or where gasoline is stored can
cause a fire or explosion.
• Before disconnecting the fuel feed hose, relieve fuel pressure from the system by disconnecting the quick connect fit-
ting of the fuel tank.
• Bending or twisting the control cables will impair smooth operation and could cause the cables to stick or bind,
resulting in loss of vehicle control.
• Do not apply commercially available carburetor cleaners to the inside of the throttle bore.
• Do not snap the throttle valve from full open to full close after the throttle cable has been removed. It may cause
incorrect idle operation.
• Seal the intake manifold ports with tape or a clean cloth to keep dirt and debris from entering the engine after the
throttle body has been removed.
• Do not damage the throttle body. It may cause incorrect throttle and idle valve synchronization.
• Prevent dirt and debris from entering the throttle bore and air passages after the throttle body has been removed. Clean
them using compressed air if necessary.
• The throttle body is factory pre-set. Do not disassemble in a way other than shown in this manual.
• Do not loosen or tighten the white painted bolts, nuts and screws of the throttle body. Loosening or tightening them can
cause throttle and idle valve synchronization failure.
• The parts of the throttle body not shown in this manual should not be disassembled.
• Always replace the packing when the fuel pump is removed.
• A faulty PGM-FI system is often related to poorly connected or corroded connectors. Check those connections before
proceeding.
• The VS sensor sends digital pulse signal to the ECM and computation. Refer to procedures for VS sensor inspection.
– DTC troubleshooting
– MIL troubleshooting
• When disassembling the fuel system parts, note the location of the O-rings. Replace them with new ones upon
reassembly.
• Use a digital tester for PGM-FI system inspection.
• Refer to the fuel level sensor inspection (page 20-29).
SPECIFICATIONS
TORQUE VALUES
ITEM
SPECIFICATIONS
Throttle body identification number
GQ84A
Idle speed
1,300
±
100 min
-1
(rpm)
Throttle grip freeplay
2 – 6 mm (1/16 – 1/4 in)
IAT sensor resistance (at 20
°
C/68
°
F)
1 – 4 k
Ω
ECT sensor resistance (at 20
°
C/68
°
F)
2.3 – 2.6 k
Ω
Fuel injector resistance (at 20
°
C /68
°
F)
11 – 13
Ω
PAIR control solenoid valve resistance (at 20
°
C/68
°
F)
23 – 27
Ω
CKP sensor peak voltage (at 20
°
C/68
°
F)
0.7 V minimum
Fuel pressure at idle
343 kPa (3.5 kgf/cm
2
, 50 psi)
Fuel pump flow (at 12 V)
189 cm
3
(6.4 US oz, 6.7 lmp oz) minimum/10 seconds
ECT sensor
23 N·m (2.3 kgf·m, 17 lbf·ft)
Insulator band screw (Throttle body
side)
See page 5-84
Insulator band screw (Cylinder head
side)
See page 5-75
Fuel rail mounting bolt
5.1 N·m (0.5 kgf·m, 3.8 lbf·ft)
IACV setting plate screw
2.1 N·m (0.2 kgf·m, 1.5 lbf·ft)
IACV joint screw
2.1 N·m (0.2 kgf·m, 1.5 lbf·ft)
Air cleaner housing screw
3.5 N·m (0.4 kgf·m, 2.6 lbf·ft)
Air cleaner housing screw
3.5 N·m (0.4 kgf·m, 2.6 lbf·ft)
Fuel pump mounting nut
12 N·m (1.2 kgf·m, 9 lbf·ft)
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
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