Closed-loop
Observation O2
●
systems for
senslor voltage
mobility
changes (Standed
motorcycle so that
engine speed
refueling between
4500 to 5500 rpm
Engine
Use diagnosis
●
vacuum
tool to detect of
the manifold
pressure
Normal starting
l
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YES
O2 sensor
●
voltage is
maintained in a
long time within
a certain range
beating
YES
Diagnosis tool
●
manifold
pressure for
compliance with
specifications?
YES
Finish
4. Fuel Injection System
O2 sensor fault
●
ECU fault
●
NG
Valve clearance is
●
NG
not normal
Intake system leak
●
Can not starting or starting difficulties
In traditional engine overhaul way to
maintenance
O2 sensor
●
voltage beating
specifications:
100 ~ 900 mV
from the two
groups within
the interactive
beating
Manifold
●
pressure
Specifications:
32~38 kPa
4-37