67 L79 Intermittent ignition problem

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  • Allen Stabenow

    #1

    67 L79 Intermittent ignition problem

    Live in northern Illinois and four years ago hit a deer, major fiberglass damage to the front end. Before the accident did not have the ignition problem.

    At that time the car did not have any ignition shielding.

    Repaired all of the fiberglass and re painted the car. Added the entire ignition shielding, and this could be a red herring.

    Since that time, with no pattern what so ever the following occurs.

    Car always starts with no issues, hot or cold. I can drive 5 miles or 500 miles or any amount in between and the following occurs. Car will start to miss, then miss more violently until finally engine goes dead. I can be doing 25 or 65. If I leave the key in the on position and try and start the car with the key or pop the clutch nothing, just dead; however, if I turn the key off/on and either use the starter or pop the clutch it will always start with out fail. Car is not running hot.

    I had new plug wires, plugs, new coil, condenser, rotor replaced.

    And now my next guess is ignition switch, thoughts?
  • Jack H.
    Extremely Frequent Poster
    • April 1, 1990
    • 9893

    #2
    Re: 67 L79 Intermittent ignition problem

    It's not uncommon for folks to route the ignition power wire (from ballast resistor to coil) too tightly causing it to 'chaff' against the lower rear edge of the distributor shield. This can generate erratic grounding of the ignition, rough idle and/or complete loss of spark...

    Comment

    • Duke W.
      Beyond Control Poster
      • January 1, 1993
      • 15229

      #3
      Re: 67 L79 Intermittent ignition problem

      The ignition power lead is routed through one of the bulkhead connectors on the cowl. Disconnecting, inspecting, and cleaning these has cured many ignition system anamolies.

      Duke

      Comment

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