4-27
Outboard motor troubleshooting
Fuel not supplied (all
cylinders)
— Measure the fuel pressure. 6-2
Pinched or kinked fuel
hose
Check the fuel hose. 2-60
Fuel leakage Check the fuel line for leakage. 2-60
Clogged fuel filter element
Check the fuel filter element for dirt
and obstructions.
6-4
Clogged fuel strainer
Check the fuel strainer for dirt and
obstructions.
6-14
Blown fuse Check the fuse. 5-10
Direct injection pump mal-
function
Check the direct injection pump. 6-19
High-pressure fuel pump
malfunction
Check the high-pressure fuel pump
operation using the YDIS.
5-29
Measure the high-pressure fuel
pump resistance.
5-29
Short, open, or loose con-
nection in high-pressure
fuel pump circuit
Check the high-pressure fuel pump
input voltage.
5-29
Check for wiring continuity between
the high-pressure fuel pump and
the engine ECM.
A-12
Check for wiring continuity between
the high-pressure fuel pump and
the electrical management box.
A-12
Short, open, or loose con-
nection in low-pressure
fuel pump circuit
Check the low-pressure fuel pump
input voltage.
5-29
Check for wiring continuity between
the low-pressure fuel pump and the
engine ECM.
A-12
Check for wiring continuity between
the low-pressure fuel pump and the
electrical management box.
A-12
Low pressure fuel pump
malfunction
Check the low-pressure fuel pump
operation using the YDIS.
5-29
Check the low-pressure fuel pump
resistance.
5-29
Relief valve malfunction Check the relief valve. 6-14
Feed valve malfunction Check the feed valve. 6-15
Injector driver malfunction Check the injector driver circuit. 5-28
Symptom 2 Cause Checking steps
See
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