Analysis Of Over Consumption Of Engine Fuel - ZONGSHEN ZS250GY-3(EFI) Maintenance Manual

Support vehicle with side stand and rotate
wheel with hands.
Wheel turns hard.
[1]Check whether brake is blocked.
[2]Check whether the axle is worn.
[3]Check whether the clapboard of wheel
hub has installed or is too short.
The mixed ratio of combustible
mixed gas is normal.
Check whether the rev of engine is
too fast.
Yes
According to 1.1
60
1.5

Analysis of over consumption of engine fuel

Engine fuel exceeds
consumptive standard.
Check whether the operation is correct.
Yes
Wheel turns normally.
Check the tire
pressure.
Check whether fuel tank,fuel tube
is leakage and hoop of tube is
fastened.
Yes
Deal with it according to the
actual situation.
①Check whether air filter is blocked.
②Check wheher oxygen sensor is work-
ing well.
No
③Check whether fuel nozzle is in work-
Check whether en- ing order.
gine ignition is timing.
Check ignition system.
[1]Check whether motorcycle runs with loads or without
economical speed or with low speed.
[2]Check whether the oil no. is correct.
Pressure is too low.
Pressure is
normal.
Inflate according to
the stated standard.
No
Check the mixed ratio of combus-
tible mixed gas.
Combustible mixed gas
is too thick.
No
Combustible mixed gas
is too thin.
① Check whether fuel filter is
blocked.
② Check whether fuel nozzle is
blocked.
③Check whether oxygen sensor
is working well.