Fuel Injector Resistance Test
Disconnect the battery cables at the battery.
Use a digital multimeter to measure the injector
coil resistance.
Fuel Injector Coil Resistance
2 to 3 Ω @ 72°F (22°C)
Use a digital multimeter with appropriate adapter
leads to measure the injector circuit resistance.
Measure resistance between pin 2 of injector con-
nector and the appropriate pin location of EMM
J1-B connector. Refer to engine wiring diagram
for specific EMM J1-B connector pin location for
the injector circuit being tested.
Circulation Pump Resistance Test
Disconnect the battery cables at the battery.
Use a digital multimeter to measure the fuel pump
circuit and coil resistance.
Fuel Pump Resistance
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Lift Pump Pressure Test
Install a 0 to 15 psi (0 to 103 kPa) Fuel Pressure
Gauge, P/N 5006397 or equivalent, to the lower
fuel pressure test fitting.
2
1. Fuel pressure gauge
2. Test fitting
Prime the fuel system and check for leaks.
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START outboard and run at idle speed. Hold
gauge level with inlet fitting and monitor gauge for
pressure reading.
Pressure should stabilize at a reading greater
than 3 psi (27 kPa).
FUEL SYSTEM
FUEL SYSTEM TESTS
3 Ω @ 77°F (25°C)
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8
1
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