Honda V65 Magna-VF1100C 1983 Shop Manual page 359

TROUBLESHOOTING
ENGINE LACKS POWER
POSSIBLE CAUSE
1.
Raise wheels off ground and spin by hand WHEELS DO NOT SPIN FREELY
( 1)
Brake dragging
(2)
Worn or damaged wheel bearings
WHEEL SPINS FREELY (3)
Wheel bearing needs lubrication
t
(4) Final gear bearing damaged
2. Check tire pressure
PRESSURE LOW
(1)
Punctured tire
(2) Faulty tire valve
PRESSURE NORMAL
+
ENGINE SPEED INCREASES BUT MOTOR·___.Itl
3.
Accelerate rapidly from low to second Clutch slipping
t
CYCLE DOES NOT ACCLERATE WELL
121 Worn clutch discfplate
ENGINE SPEED INCREASES PRO-
WHEN CLUTCH IS RELEASED
(3)
Warped clutch disc{plate
PORTIONALL Y TO ACCELERATION
WHEN CLUTCH IS RELEASED
4 .
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Accelerate lightly ENGINE SPEED DOES NOT INCREASE
( 1)
Carburetor choke closed
(2)
Clogged air cleaner
ENGI NE SPEED INCREASES
(3)
Restricted fuel flow
1
(4) Clogged muffler
(5)
Pinched fual tank vent hose
5. Check ignition timing
INCORRECT
(1)
Faulty spark unit
(2)
Faulty pulse generator
CORRECT
6 .
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Check valve clearance
INCORRECT
(1)
Improper valve adjustment
(2)
Worn valve seat
CORRECT
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7.
Test cylinder compression
TOO LOW (1) Valve stuck open
(2) Worn cylinder and piston rings
NORMAL (3)
Leaking head gasket
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(4) Improper valve timing
8. Check carburetor for clogging
CLOGGED ( 1)
Carburetor not serviced
frequently enough
NOT CLOGGED
9.
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Remove spark plug FOULED OR D ISCOLORED
(1)
Plugs not serviced frequently
enough
NOT FOULED OR DISCOLORED
(2) Spark plug with incorrect heat
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range
(3) Air cleaner dirty
10. •Check oil level and condition
INCORRECT
(1)
Oil level too high
(2) Oil level too low
CORRECT (3)
Contaminated oil
11.
A
t .
d .
VALVE TRAIN NOT LUBRICATED (1) Clogged oil passage
emova cylinder hea cover and mspect
lubrication
PROPERLY
(2)
Clogged oil control orifice
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VALVE TRAIN LUBRICATED
PROPERLY
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12. Check for engine overheating OVERHEATING (1) Excessive carbon build-up
in combustion chamber
NOT OVERHEATING (2)
Use of poor quality fuel
t (3)
Clutch slipping
13. Accelerate or run at high speed
ENIGNE KNOCKS
(1)
Worn piston and cylinder
(2) Wrong type of fuel
ENGINE DOES NOT KNOCK
(3)
Excessive carbon build-up in
combustion chamber
(4) Ignition timing too advanced
(Faulty spark unit)
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