Unstable Idle - um CBF 125 Service Manual

7 Check whether the cylinder pressure is normal or not


Unstable idle

STEP
1 Check whether the air filter is blocked and whether the
intake pipe leaks.
2 Whether there is carbon deposit at the throttle body and
bypass channel.
Check whether the IACV works well
3
4 Check whethe the fuel pressure is about 250kPa.
Check whether the injeoctor is blocked.
5
6 Make sue using the right type sprk plug
Check whether the cylinder pressure is normal
7
Remove the engine temperature sensor, and check whether
8
the engine works well
9 Remove the TPS, check whether the engine works well
CBF 125 AIR COOLING ENGINE SERVICE MANUAL
RENEGADE SPORT & SCRAMBLER X 125 EFI
OPERATION
combustion chamber.
No Next
Yes Engine is good
No Check the engine
SOLVED FOLLOWING STEP
Intake system
Yes
maintenance
No Next
Yes Clean the TB
No Next
Yes Next
No Check the IACV
Yes Next
No Check the pump
Clean or change the
Yes
injector
No Next
Yes Next
No Change the spark plug
Yes Next
No Check the engine
Yes Change the senor
No Next
Yes Change the sensor
No Help
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