Honda V65 Magna-VF1100C 1983 Shop Manual page 319

IGNITION SYSTEM
TROUBLESHOOTING
The ignition system has two sub-systems; one for
the No. 1 and No. 3 cylinders and one for the No. 2
and No. 4 cylinders. Determine which sub-system is
faulty, then proceed to the detailed tests below.
Engine cranks but will not start
Engine stop switch OFF
No spark at plugs
Faulty transistorized spark unit
Faulty pulse generator
No spark at plug
Engine stop swtich OFF
Poorly connected, broken, or shorted wires
Between ignition switch and engine stop switch
Between spark unit and engine stop switch
Between spark unit and ignition coil
Between ignition coil and plug
Between spark unit and pulse generator
Faulty ignition coil
Faulty ignition switch
Faulty spark unit
Faulty pulse generator
Engine starts but runs poorly
Ignition primary circuit
Faulty ignition coil
Loose or bare wire
Intermittent short circuit
Secondary circuit
Faulty plug
Faulty high tension wire
Timing advance incorrect
Faulty pulse generator
- Faulty spark unit
19-2