6 - 42
FI
FUEL INJECTION SYSTEM
CHECKING THE FUEL PUMP AND
PRESSURE REGULATOR OPERATION
1. Check:
• pressure regulator operation
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a. Remove the air duct.
Refer to “FUEL TANK” in chapter 3.
b. Remove the fuel hose end clamp
1
.
c. Disconnect the fuel hose
2
from the fuel
injection pipe
3
.
d. Connect the mity vac
4
onto the pipe
5
onto the pressure regulator.
e. Connect the fuel pressure adapter
6
to the
pressure gauge
7
.
f. Connect the fuel pressure adapter between
the fuel hose
2
and fuel injection pipe
3
.
g. Start the engine.
h. Measure the fuel pressure.
i. Use the vacuum pressure pump gauge set
to adjust the fuel pressure in relation to the
vacuum pressure as described below.
NOTE:
The vacuum pressure should not exceed
100 kPa (1 mmHg).
Faulty
→
Replace the pressure regulator.
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Mity vac
YB-35956
Pressure gauge
YU-03153
Fuel pressure adapter
YM-03176
Fuel pressure
328 kPa (3.28 kg/cm
2
, 3.28 psi)
Increase the vacuum pressure
→
Fuel pressure is decreased
Decrease the vacuum pressure
→
Fuel pressure is increased
5
3
2
Содержание XV1700P
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