Table of Contents
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EAS26980
CHECKING THE INJECTOR
1. Check:
• Injector
Damage → Replace.
EAS26990
CHECKING THE THROTTLE BODY
1. Check:
• Throttle body
Cracks/damage → Replace the throttle body.
2. Check:
• Fuel passages
Obstructions → Clean.
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a. Wash the throttle body in a petroleum- based
solvent.
Do not use any caustic carburetor cleaning
solution.
b. Blow out all of the passages with compressed
air.
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EAS27010
CHECKING THE PRESSURE REGULATOR
OPERATION
1. Check:
• Pressure regulator operation
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a. Remove the fuel tank top panel.
Refer to "GENERAL CHASSIS" on page 4-1.
b. Remove the fuel hose connector cover and
fuel hose retainer.
c. Disconnect the fuel hose "1" from the fuel
pump.
TIP
• When removing the fuel hose from the fuel
pump, remove the fuel hose connector holder
first, and next, insert a slotted head screwdriver
etc. in the slot part "a" of the fuel hose connec-
tor cover "2", then slide it in the direction of the
arrow, and remove the fuel hose.
• Before removing the hose, place a few rags in
the area under where it will be removed.
2
a
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7-7
THROTTLE BODY
d. Connect the pressure gauge "3" and adapter
"4" to the fuel pump and fuel hose.
Pressure gauge
90890-03153
Pressure gauge
YU-03153
Fuel pressure adapter
90890-03176
Fuel pressure adapter
YM-03176
1
e. Start the engine.
f. Measure the fuel pressure.
Out of specification → Replace the fuel
pump.
Fuel pressure
324 kPa (3.24 kgf/cm², 46.1 psi)
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EAS27030
ADJUSTING THE THROTTLE POSITION
SENSOR
TIP
Before adjusting the throttle position sensor, the
engine idling speed should be properly adjusted.
1. Check:
• Throttle position sensor
Refer to "CHECKING THE THROTTLE PO-
SITION SENSOR" on page 8-76.
2. Adjust:
• Throttle position sensor angle
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a. Connect the throttle position sensor coupler
to the wire harness.
b. Connect the digital circuit tester to the throttle
position sensor.
• Positive tester probe
yellow "1"
• Negative tester probe
black/blue "2"
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Troubleshooting
