114
SYSTEM ANALYSIS
FUEL DELIVERY TESTS
FUEL DELIVERY TESTS
Refer to Relieving Fuel System Pressure on
p. 166.
Check the Evinrude Diagnostics software Stored
Faults screen for current service codes before
troubleshooting. Correct any problems and clear
the codes FIRST.
Inspect all fuel hoses, filters, and connections.
Check quality of fuel supply.
Fuel Pump Static Test
Use the Evinrude Diagnostics software Fuel
Pump test to activate the electric fuel pump. If the
pump runs, the EMM and fuel pump circuit are not
at fault.
If the pump does not run:
• Check voltage at pin 1 of fuel pump connector.
Voltage should be slightly less than 12 V with
KEY ON, or when fuel pump test is activated.
Voltage should be 55 V when the outboard is
cranking or running.
• The EMM controls the fuel pump ground (brown
wire). Use an ohmmeter to check continuity
between pin 2 of fuel pump connector and
ground. Use the fuel pump static test to activate
the control function of the EMM. Resistance
should drop as EMM connects the control circuit
to ground.
• Refer to Circulation Pump Resistance Test
on p. 163.
If the pump runs:
• Refer to Fuel System Pressure Test on
p. 161.
• Refer to Running Fuel System Tests on
p. 115.
Fuel Injector Static Test
Use the Evinrude Diagnostics software Fuel Injec-
tor Static Test to activate each fuel injector. Listen
for an audible “click” from each injector when it is
actuated. If the injector activates, the EMM and
injector circuits are not at fault.
IMPORTANT: This test is operating the injec-
tors with 12 V battery power on the system volt-
age (55 V) circuit. Battery must be fully charged
and connections must be clean and tight. Injector
activation should be carefully confirmed.
WARNING
Protect against hazardous fuel spray.
Before starting any fuel system service,
carefully relieve fuel system pressure.
Static Tests Screen 006775
Static Tests Screen 006775
To Next Page
Loading...
Need help?
General
