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Isuzu
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1989
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I-Mark LS
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Repair and Diagnosis
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Engine Performance
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Specifications - 4-CYL
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Fuel Systems
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Fuel Pump (Fuel Injected)
Fuel Pump (Fuel Injected)
FUEL PUMP PERFORMANCE
Model/Application
(1)
Unregulated Pressure psi (kg/cm
2
)
(2)
Regulated Pressure psi (kg/cm
2
)
I-Mark
35 (2.5)
28 (2.0)
Impulse
42 (3.0)
35 (2.5)
(1)
With fuel pressure regulator vacuum hose disconnected and plugged.
(2)
With vacuum hose connected to pressure regulator.