Honda BF135A Manual page 165

BF135A•BF150A
• QUICK REFERENCE CHART OF TROUBLESHOOTING BY SYSTEM
When the MIL does not come ON but the engine becomes faulty, refer to the following troubleshooting chart and check
the parts in the numbered order shown on the chart.
Idle Control System
Symptom
Engine does not start
Engine starts but stalls soon
Engine speed is higher than the specified idle speed
after warm up.
Engine speed is higher than the specified trolling speed
after warm up.
Engine speed is lower than the specified idle speed
after warm up.
Engine speed is lower than the specified trolling speed
after warm up.
Engine speed is not stable during idling and trolling.
Low Pressure Fuel Supply System
Symptom
Engine does not start
Engine starts but stalls soon
Engine speed is not stable during idling and trolling,
or engine stalls.
Engine sometimes misfires or stalls soon
Engine stalls soon at hot restart of the engine.
High Pressure Fuel Supply System
Symptom
Engine does not start
Engine starts but stalls soon
Engine speed is not stable during idling and trolling,
or engine stalls.
Engine speed does not rise
Engine sometimes misfires or stalls soon
Check point Idle
adjusting
screw
Ref. page 5-94
1
3
3
2
2
2
Check point Low
pressure
fuel line
Ref. page 5-104
3
3
3
Check point High
pressure
fuel line
Ref. page 5-104
1
1
1
1
1
IAC Neutral
valve switch
5-95 17-13
2
2
2
4 1
1
1
1 4
Low
Water
pressure
separator
fuel strainer fuel pump
3-19 3-15
1 2
1 2
1 2
1 2
High High
pressure pressure
fuel pump fuel strainer
5-107 3-18
2
2
3 3
3
Vacuum
pipe
5-5
1
3
1
2
3
3
3
Low
Vapor
pressure
separator
5-142 5-111
4
4
4
1
Fuel Pressure
injector regulator
5-105 5-106
3
3
2 3
3 2
2 3
5-12