Fault Finding; The Engine Does Not Start/Start Difficult - Honda 2010 CBX 250 Workshop Manual

CBX250
THE ENGINE DOES NOT
START/ START DIFFICULT
THE ENGINE HAS NO POWER
UNDER PERFORMANCE AT
LOW REVS OR IN THE IDLE

THE ENGINE DOES NOT START/START DIFFICULT

1. Check to see if the fuel comes to
the carburetor
The fuel comes to
the carburetor
2. The test of spark.
Spark normal
3. Remove and inspect the spark plug
OK
4. Activates the engine through
the normal procedures.
The engine does
not start.
5. Check the compression of the cylinder.

21. FAULT FINDING

21-1
21-2
21-3
The fuel does
not arrive at
the carburetor
Spark weak or
without spark
Spark plug wet
OR engine
starts, for more
quickly.
Low com-
pression
UNDER PERFORMANCE AT HIGH REVS
DIRECTABILITY DEFICIENT
Probable Causes
•Line or fuel filter blocked. •Relief fuel tank obstructed.
•Spark ignition defect. •Spark Plug power dirty. •Control
Module ignition (ICM) with fault. Cable •spark plug
broken or shorted. •Ignition Coil with fault or shorted.
•Power switch with fault. •Pulse generator power with
fault. •Switch of emergency by fault. • Cables of igni-
tion system loose or disconnected
•Carburetor drowned •Valve enrichment of
start (IS) stuck in the position driven •Valve
open acceleration •dirty air filter
•Malfunctioning of the valve enrichment of start (IS)
•Carburetor incorrectly adjusted •Penetration of air
false in the intake. •Point of faulty ignition (ICM
or pulse generator power with fault).
•Contaminated Fuel
•Valve stuck in the open position. •Cylinder
and rings of the piston worn. •Gasket of
the cylinder head damaged. •Valve stuck.
•Synchronisation incorrect valves.
21-4
21-4