Troubleshooting; Engine Does Not Start Or Is Hard To Start - Honda V30 Magna VF500C Manual

~HONDA.
~V30
MAGNA
ENGINE DOES NOT START OR IS HARD TO START
ENGINE LACKS POWER
POOR PERFORMANCE AT LOW AND IDLE SPEEDS
POOR PERFORMANCE AT HIGH SPEED
POOR HANDLING
ENGINE DOES NOT START OR IS HARD TO START
20-1
20-2
20-3
20-3
20-3
POSSIBLE CAUSE
1. Check fuel flow to carburetor
NOT REACHING CARBURETOR--------lIIIo .. (1) Fuel tank empty
REACHING CARBURETOR
I
2. Perform a 3·point spark test
GOOD SPARK
3. Test cylinder compression
COMPRESSION NORMAL
I
4. Start by following normal procedure
ENGINE DOES NOT FIRE
j
5. Remove and inspect spark plug
Date of Issue: July, 1984
©
HONDA MOTOR CO., LTD.
WEAK OR NO S P A R K - - - - - - - - -.....
10
(2) Clogged fuel I ine or fuel filter
(3) Sticking float valve
(4) Faulty fuel pump
(5) Fau Ity fuel pump relay
(6) Pinched fuel tank vent hose
(1)
Faulty spark plugs
(2)
Fouled spark plugs
(3)
Faulty spark unit
(4)
Broken or shorted high tension
wires
(5)
Faulty spark unit
(6)
Broken or shorted ignition coil
(7)
Faulty ignition switch
(8)
Faulty pulse generator
LOW COMPRESSION - - - - - - - - - - - - l I ..
110
(1)
Low battery ch a rge
(2)
Improper valve clearance (too
small)
(3)
Valve stuck open
(4)
Worn cylinder and piston r!ngs
(5)
Damaged cylinder head gasket
(6)
Seized valve
(7)
Improper valve timing
ENGINESTARTSBUTSTOPS---------lI~
'" (1)
Improper choke operation
(2)
Carburetor incorrectly adjusted
(3)
I ntake pipe leaking
(4)
Improper ignition timing
(Spark unit or pulse generator)
(5)
Fuel contaminated
WETPLUG-----------------------~
110
(1)
Carburetor flooded
(2)
Carburetor choke excessively
closed.
(3)
Cylinder flooded
(4)
Air cleaner dirty
20-1