Recent content by jaferrio

  1. J

    Ford 9N Rough Idle

    Update: Replaced points & condenser with the Echlin points suggested by EdGooding. Had to put about .038" shim beneath the cam rocker/rub arm to align the points exactly, but they mate perfectly now when closed. Set to 0.015" gap and adjusted timing per the manual. Runs great now, all plugs...
  2. J

    Ford 9N Rough Idle

    Yes. Points set to 0.015".
  3. J

    Ford 9N Rough Idle

    We have a new 1 ohm ballast resistor on the dash in series with the coil. The coil has an internal resistor of 2.5 ohms (measured it and it is marked as such w/ a sticker on it), so total circuit resistance is 3.5 ohms, giving about 3.4 amps to the coil when the points are closed. Thanks for...
  4. J

    Ford 9N Rough Idle

    Checked intake by spraying a flammable checking for cracks while running, no change. Carb is brand new, checked it for gunk, all good. Pulled the front mount distributor, checked the condenser w/ a meter I have. It read 0.26 mF (microfarads). Changed the suspected 6 volt coil w/ a new 12v...
  5. J

    Ford 9N Rough Idle

    1941 Ford 9N will barely idle and will not throttle up w/o backfiring. Will sometimes run OK for a few seconds, then goes back to rough idle. Cannot throttle up at all. Ignition System: 1. Looks like a brand new distributor+coil was installed from previous owner. Tore apart, lubricated...
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