Engine Does Not Start Or Is Hard To Start; 22. Troubleshooting - Honda CBR150R Manual

22. TROUBLESHOOTING
~~
ENGINE DOES NOT START OR IS
POOR PERFORMANCE AT HIGH
HARD TO START
22-1
SPEED
22-4
ENGINE LACKS POWER
22-2
POOR HANDLING
22-4
POOR PERFORMANCE AT LOW
AND IDLE SPEED
22-3
ENGINE DOES NOT START OR I S HARD TO START
Possible cause
1. Check the fuel flow to carburetor
-
I
Reaching carburetor
1
Perform a spark test
Good spark
Remove and inspect spark plug
Good
___
I
Start
by
following normal procedure
-
Engine does not start
I
Test cylinder compression
Not reaching
-
Clogged fuel line and fuel auto valve
carburetor Clogged fuel tank breather
Weak or no spark
-
Faulty spark plug
Fouled spark plug
Faulty ignition control module (ICM)
Broken or shorted spark plug wire
Faulty ignition switch
Faulty ignition pulse generator
Loose or disconnected ignition
system wires
Wet plug Flooded carburetor
Starting enrichment (SE) valve ON
position (open)
Throttle valve open
Air cleaner dirty
Engine starts but
-
lmproper choke operation
stops Carburetor incorrectly adjusted
Intake pipe leaking
Improper ignition timing (Faulty ICM
or ignition pulse generator)
Fue\ contaminated
Low compression
-
Valve clearance too small
Valve stuck open
Worn cylinder and piston ring
Damaged cylinder head gasket
Seized valve
Improper valve timing
22-1