Honda CBR600F4i Series Service Manual page 487

22. TROUBLESHOOTING
ENGINE DOES NOT ST ART OR IS
HARD TO ST ART
22-1
22-2
POOR PERFORMANCE AT HIGH
SPEED 22-4
22-4
ENGINE LACKS POWER
POOR HANDLING
POOR PERFORMANCE AT LOW
AN D IDLE SPEED 22-3
ENGINE DOES NOT ST ART OR IS HARD TO ST ART
Possible cause
1.
Check fo r operation of the fuel pu mp - -- - - - Abnorma l - - - --
►
•
F11ulty fuel pump (Section 5)
1
Normal
t
2.
lnsp1,ct the fuel flow - - - - - - - -- - -
Ah
normal------ -
Faul ty pr.,.ssure reou l;itor
(Sect ion
5 )
1
Normal
t
3. Inspect the fuel injector - -
-------Abnormal ----- ►
·
See section 5
Normal
t
4.
Perform
a
spa rk tP.st - - - - -- - -- -
1
Weak or no sp.irk
Good spark
5. Test cyli111J1,r compression - - - -- -- - - - I ow compression
I
I
Compression normal
i
6. Starting following normal procedure - - - - - - Engine sta rts hut
1<tops
Engine does not &tart
7. Remove and inspP.c:t spark p lug - - - -- - - - Wet plug - - - -- - -
• Faulty spark plug
Fo11len spark pl ug
F.iulty ECM
Broken or shorted spark plug wire
Faulty ignition switch
Fau lty ignition pulse ge11e1 ato r
Faulty engi n1, stop switc:h
Loose or disc:onnected ignition
system wires
Valv1, stuck o pen
Worn c:yhnder and piston ring
Damoged cylinder h1,ad gasket
Seized valve
Improper valve timi ng
Improper sta rt1,r valve oper1111 on
• Intake pipe leaki ng
Improper ignition timing (fa ulty
ig nition coil or ignition pulse gen•
erator)
Fuel r.ontaminatcd
Starter valv1, closed
Throttle va lve open
Clogged .iir cleaner
22-1