1971 dodge challenger 340

General Mopar Tech Discussions

  1. Alanj4

    Alanj4 New Member

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    Hi All:
    I have a 71 challenger 340, trying to get it started. I have spark to the distributor but have no spark at the spark plugs.
    New Ballast resistor
    new coil
    new negative cable
    new voltage regulator

    Any ideas?

    Thanks a lot

    Al
     
  2. aeon280

    aeon280 Well-Known Member

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    If you have spark going into the distro but not coming out check your distro cap and rotor for corrosion. Clean the contacts first and replace if corrosion is prevalent. You might also check resistance on the wires with an ohm meter. Here are some specs to start with. If the measurements fall outside this you may have bad wires prohibiting spark to the plug.

    0-15 in. (0-38cm): 3,000-10,000 ohms.


    15-25 in. (38-64cm): 4,000-15,000 ohms.


    25-35 in. (64-89cm): 6,000-20,000 ohms.


    Over 35 in. (89cm): 25,000 ohms.
     
    Last edited: Apr 24, 2018
  3. Don Frelier

    Don Frelier FBBO Gold Member FBBO Gold Member

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    Agree, one other thing would be to pull each wire from the cap and check for any corrosion or arcing build up there.
     
  4. rlem1977

    rlem1977 Well-Known Member

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    I assume this is a breaker point / condenser ignition, not electronic. If so, are the points opening? Are they burned? As aeon280 and Don stated, check the rotor and the terminals inside the cap for corrosion.
     
  5. Alanj4

    Alanj4 New Member

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    The rotor, dist cap and wires are all new.
     
  6. Alanj4

    Alanj4 New Member

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    the wires, rotor and cap are all new
     
  7. Bb70charger500

    Bb70charger500 Well-Known Member

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    New doesn't mean it works by today's standards!
    Take a few pictures for us so we can see what ignition type you have if it's points if there not set right you won't get spark any further in the system!
     
  8. wyrmrider

    wyrmrider Well-Known Member

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    did you have the dist out, wires all off?
     
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