Yamaha SX150C, Руководство по обслуживанию

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8-26
– +
ELEC
E
INSPECTING THE FUEL INJECTORS 8
1. Inspect:
• Fuel injector operating sound
No sound (no fuel is being sprayed)
→
Inspect the high-pressure fuel pump.
Inspecting steps
(1) Remove the intake silencer 1 .
(2) Start the engine.
(3) Fully close the throttle valves.
(4) Attach the screwdriver
2 onto the fuel
injector body and check if all of the fuel
injectors have a solenoid valve operat-
ing sound.
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2. Inspect:
• High-pressure fuel pump operating
sound
Correct
→
Replace the fuel injector (no
sound).
No sound
→
Inspect the main relay.
NOTE:
• The high-pressure fuel pump should
sound when the engine start switch is
turned on.
• Disconnect the Brown (Br) starter relay
lead 1 to prevent the engine from start-
ing.
3. Inspect:
• Main relay continuity
Correct
→
Replace the high-pressure
fuel pump.
Out of specification
→
Replace the
main relay.
Engine
start
switch
Lead color
Red (R)
Red/yellow
(R/Y)
OFF
ON
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FUEL CONTROL SYSTEM