Checking The Injectors; Checking The Throttle Bodies; Checking The Pressure Regulator; Checking The Pressure Regulator Operation - Yamaha XJR1300 2007 Service Manual

EAS26980

CHECKING THE INJECTORS

1. Check:
Injectors
G
Damage → Replace.
EAS26990

CHECKING THE THROTTLE BODIES

1. Check:
Throttle bodies
G
Rust/scratches/wear→Replace the throttle
body assembly.
2. Check:
Fuel passages
G
Contaminants → Clean the throttle body pas-
sages.
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Wash the throttle bodies in a petroleum-
based solvent.
Do not use carburetor cleaner.
b. Blow out all of the passages with com-
pressed air.
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
EAS27000

CHECKING THE PRESSURE REGULATOR

1. Check:
Pressure regulator
G
Damage → Replace.
EAS27010
CHECKING THE PRESSURE REGULATOR
OPERATION
1. Check:
Pressure regulator operation
G
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Remove the fuel tank.
Refer to "FUEL TANK" on page 6-1.
b. Disconnect the negative pressure hose "1"
from the pressure regulator at the hose joint.
c. Connect the vacuum/pressure pump gauge
set "2" to the negative pressure hose of the
pressure regulator.
2
d. Connect the pressure gauge "3" and adapter
"4" to the fuel injection pipe.
Vacuum/pressure pump gauge
set
90890-06756
Mityvac brake bleeding tool
YS-42423
Pressure gauge
90890-03153
Fuel pressure adapter
90890-03176
YM-03176
e. Install the fuel tank.
Refer to "FUEL TANK" on page 6-1.
f. Start the engine.
g. Measure the fuel pressure.
Fuel pressure
387– 397 kPa (3.87 – 3.97 kg/
cm
h. Use the vacuum/pressure gauge set to
change the vacuum pressure, and check that
the fuel pressure is correctly adjusted to the
vacuum pressure state.
NOTE:
The vacuum pressure should not exceed 100
kPa (760 mm Hg).
6-7
THROTTLE BODIES
1
2
4
2
)
3