Trouble in ignition system

Possible causes/checking sequence

• Check ignition coil for cracks, tracking and loose connections
• Suppression condenser incorrectly connected (on terminal 1 instead of terminal 15)
• Check distributor cap for:
  • dampness
  • dirt
  • cracks, tracking
  • condition of carbon brush
• Check rotor for continuity
• Check contact breaker for:
  • pitting
  • gap/dwell angle
    (do not forget ignition timing adjustment)
• High tension cables or connectors damp, dirty or defective (poor contact, arcing)
• Check spark plugs for:
  • internal and external dampness
  • dirt/dwell angle
  • burning (check for correct heat range)
  • electrode gap (0.6-0.7 mm/0.024-0.028 in.)
  • damage
• Condenser loose or defective
• Foreign body (washer or circlip) fallen into distributor housing; blow out with compressed air