Honda cbr954rr Service Manual
21
TROUBLESHOOTING
ENGINE DOES NOT START
OR
IS
POOR PERFORMANCE AT HIGH
HARD TO START
21-1
SPEED
21-4
ENGINE LACKS POWER
21-2
POOR HANDLING
21
-4
POOR PERFORMANCE AT LOW
AND IDLE SPEED
21 -3
ENGINE
DOES
NOT START OR
IS
HARD TO START
Possible cause
1. Check for operation of the fuel pump
Abnormal
Faulty fuel pump (Section
5 )
I
Normal
Abnormal
Faulty pressure regulator (Section
I
I
2.
Inspect the fuel flow
Normal
I
3.
Inspect the fuel injector
Abnormal
See
section
5
I
Normal
Weak or no spark
Faulty spark plug
Fouled spark plug
Faulty ECM
Broken or shorted spark plug wire
Faulty ignition switch
Faulty ignition pulse generator
Faulty engine stop switch
Loose or disconnected ignition
Fouled spark plug
Faulty ECM
Broken or shorted spark plug wire
Faulty ignition switch
Faulty ignition pulse generator
Faulty engine stop switch
Loose or disconnected ignition
I
4. Perform
a
spark test
I
Good spark
system wires
Low
compression
Valve stuck open
Worn cylinder and piston ring
Worn cylinder and piston ring
Damaged cylinder head gasket
Seized valve
Improper valve timing
I
Engine starts but
Improper starter valve operation
stops
Intake pipe leaking
5.
Test cylinder compression
Compression normal
Improper ignition timing (Faulty
ignition coil or ignition pulse
ignition coil or ignition pulse
6. Starting following normal procedure
I
I
Engine does not start
Fuel contaminated
7.
Remove and inspect spark plug
Wet plug
Starter valve closed
Throttle valve open
Clogged air cleaner
21-1