Troubleshooting; Engine Does Not Start Or Is Hard To Start - Honda V 45 SABRE-VF750S 1982 Shop Manual

~ HONDA
~
V45
:.!:::
24. TROUBLESHOOTING
ENGINE DOES NOT START OR IS HARD TO START
L
Check fuel flow to carburetor
REACHING CARBURETOR
2. Perform 8 3-point Sp3rk teu
GOOD SPARK
3. Tau cylinder eompreuion
COMPRESSION NORMAL
••
Start bV following normal proeedure
ENGINE DOES NOT FIRE
5.
Remow and inspect spark
plug
-
-
Date
of Issue: May, 1982
@
HONDA MOTOR CO., lTD.
---
-
POSSIBLE CAUSE
NOT REACHING CARBUAETOR
•
(11 Fuel tank empty
(2)
CIO!IQed fultl lube 0' fuel flIter
(3)
SI;ckl,,!! float valve
(4)
CI0!}9ed fuel tank cap
brHlher hole (V45 SABRE)
(5)
F&Ultv luel pump (V 45 MAGNA)
(6) Pinched lUi'll tank vent ho~
(V45 MAGNA)
WEAK OR NO SPARK
•
(11 Faully sperk plugs
(2) Fouled spark plugs
(3)
Faulty spark unit
(4)
Broken or shorted high tension
wiret
(51
Faulty spark unit
(6) Broken or Ihonlld ignition eoil
(7) Feulty ignition switch
(8)
F.ulty pul$e generator
LOW COMPRESS ION
•
(11 Low
battery charge
(2)
Improper valve clearance \too
small)
(3)
Valve $tuck
o~"
(') Worn cylinder and pinon rings
(51
Oam8{led cyllnder heed galkel
(6) Seile<:! valve
(7)
Imprope1" veille timing
ENGINE STARTS BUT STOPS
•
(1) Improper cholca operation
(2)
Carburetor incprre<;tlv adjusted
(3)
Intake pipe leaking
(<I
Improper ignition timing
(Spark unit Or puis. generetor)
(5)
Fuel contaminau,d
WET PLUG - -- - - - - - - - - - - -•• - (1) Carburetor flooded
'{21 Choke closed
359
-
-
..--
---
..
(31 Throttle wive open
(41 Air cleaner dirtV
24-1
-