um CBF 125 - Backfire

CBF 125 AIR COOLING ENGINE SERVICE MANUAL
RENEGADE SPORT & SCRAMBLER X 125 EFI
114
6
Check the typ and the clearance of the spark plug.
Yes
Next
No
Change the sprk plug
7
Check whether the cylinder pressure is normal
Yes
Next
No
Check the engine
8
Check whether the exhaust pipe is blocked or not
No
help
Yes
maintenance
 Backfire
STEP
OPERATION
SOLVED
FOLLOWING STEP
1
Pull out the spark plug, check whether the sparkover is
normal.
Yes
Next
No
Check the ignition
system
2
Check whether the timing is right
Yes
Next
No
Adjust the timing
3
Check whether there is leakage in the valve
Yes
Adjust the valve
No
Next
4
Check whether the injeoctor is blocked.
Yes
Clean or change
the injector
No
Next
5
Check whether the oxygen sensor works well
Yes
Help
No
Change the sensor