163
FUEL SYSTEM
FUEL SYSTEM TESTS
8
Fuel Injector Resistance Test
Disconnect the battery cables at the battery.
Use a digital multimeter to measure the injector
coil resistance.
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.
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.
Prime the fuel system and check for leaks.
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 Injector Coil Resistance
2 to 3 Ω
@ 72°F (22°C)
006620
006621
Fuel Pump Resistance
3 Ω @ 77°F (25°C)
006633
1. Fuel pressure gauge
2. Test fitting
006781
1
2
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