Yingang YG125-30B, Руководство пользователя

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YG125-30B Maintenance Manual Engine management system
156
engine works well No Change the sensor
A
cce
le
ra
ti
on
ge
ts
w
o
rse
Check whether the air filter is blocked and whether the intake
pipe leaks.
Yes Intake system maintenance
No Next
Check whethe the fuel pressure is about 250kPa.
Yes Next
No Check the pump
Pull out the sprk plug, check whether it is wet or not
Yes
dry the plug and
combustion chamber.
No Next
Check whether the TMAP, TPS and the connections works well.
Yes Next
No
Change the sensor or
harness maintenance
Check whether the injeoctor is blocked.
Yes
Clean or change the
injector
No Next
Check the typ and the clearance of the spark plug.
Yes Next
No Change the sprk plug
Check whether the cylinder pressure is normal
Yes Next
No Check the engine
Check whether the exhaust pipe is blocked or not
No help
Yes maintenance
B
ack
fi
re
Pull out the spark plug, check whether the sparkover is normal.
Yes Next
No Check the ignition system
Check whether the timing is right
Yes Next
No Adjust the timing
Check whether there is leakage of the valve
Yes Adjust the valve
No Next
Check whether the injeoctor is blocked.
Yes
Clean or change the
injector
No Next
Check whether the oxygen sensor works well
Yes Help
No Change the sensor
M
iss
fi
re
Pull out the spark plug, check whether the sparkover is normal.
Yes Next
No Check the ignition system
Check whether the timing is right
Yes Next
No Adjust the timing
Check the typ and the clearance of the spark plug.
Yes Help
No Change the sprk plug