IGNITION SYSTEM
TROUBLESHOOTING
Engine Cranks but Will N o t Start
1. Engine stop switch OFF
2. No spark at plugs
3. Improper ignition timing
4. Plugs fouled
5. Plug wires crossed
6. Open ignition diode
7. Ignition malfunction
No Spark at Plugs
1. Engine stop switch OFF
2. Points not opening
3. Points burned, wet, fouled or dirty
a. Loose or broken wire
b. Low battery, low charging voltage
c. Faulty ignition switch
d. Faulty starter b u t t o n
e. Faulty engine stop switch
f. Faulty ignition coil
5. Faulty high tension cords
6. Coils weak or inoperative
7. Faulty condenser
8. Faulty spark plug
9. Ignition timing incorrect
Ignition Timing Incorrect
1. Inconect breaker point gap
2. Faulty spark advancer
Engine Starts but Runs Poorly
1. Ignition primary circuit
a. Points d i r t y or fouled
b. Incorrect point gap
c. Weak or defective coil
d. Faulty capacitor
e. Loose or bare wire
f. Intermittent short-circuit in a switch
2. Ignition secondary circuit
a. Plugs fouled or w o r n
b. Faulty or crossed plug wires
3. Ignition timing
a. Improper ignition timing
b. Faulty advancer mechanism
4. Low battery, low charging voltage
Engine Kicks Back When Starting or Backfires When
Running
1. Improper ignition timing
Misfiring during Acceleration
1. Worn spark plug, breaker points and/or ignition wires
2. Incorrect ignition timing
Backfiring
1. Ignition timing incorrect
2. Ignition malfunction
1 5 - 2
Date of Issue: December, 1977
© H O N D A MOTOR CO.. L T D .
Summary of Contents for CM 185T 1981
Page 8: ...GENERAL INFORMATION 1 8 Date of Issue December 1977 HONDA MOTOR CO LTD ...
Page 9: ...GENERAL INFORMATION WIRING DIAGRAMS 1 8 Date of Issue December 1977 HONDA MOTOR CO LTD ...
Page 47: ...CARBURETOR 4 ...
Page 54: ...ENGINE REMOVAL AND INSTALLATION 5 Date of Issue December 1977 HONDA MOTOR CO LTD ...
Page 56: ...CYLINDER HEAD VALVES SERVICE DATA 6 2 Date of Issue December 1977 HONDA MOTOR CO LTD ...
Page 87: ...7 Date of Issue December 1977 HONDA MOTOR CO LTD CYLINDER PISTON ...
Page 117: ...A C GENERATOR STARTER MOTOR TORQUE 4 5 5 0 kg m 32 5 36 2 ft lb ...
Page 169: ...REAR WHEEL REAR SUSPENSION 12 Date of Issue December 1977 H O N D A MOTOR CO LTD ...
Page 198: ...17 Date of Issue December 1977 H O N D A MOTOR CO LTD SWITCHES LIGHTS HORN ...