Home Forum Ask A Member Johnson K50 no spark

Viewing 9 posts - 1 through 9 (of 9 total)
  • Author
    Posts
  • #2175
    Doug Wilson
    Participant

      US Member

      I have replaced the condensors and polished the points to a mirror finish adjusted them to 0.020 checked and reset them 3 times checked coils with ohm meter. Plug wires are new occasionally will get a white spark on the lower cyl upper nothing at all. Any suggestions where to start checking?
      Doug

      Doug

      how is it motors multiply when the garage lights get
      turned off?

      #21410
      Mumbles
      Participant

        Being a prewar motor with iron magnets, they are probably weak and will need recharging.

        #21411
        Doug Wilson
        Participant

          US Member

          had been wondering if the magnets could be weak

          Doug

          how is it motors multiply when the garage lights get
          turned off?

          #21412
          jeff-register
          Participant

            US Member - 2 Years

            What were the ohmeter readings. Go from plug wire to ground on each coil? How old are your capacitors. Need to check them too.
            Take your flywheel against another later flywheel to see if your iron magnets pull as strong as the late model magnets. Hope they pull as hard too!!

            #21414
            Mumbles
            Participant

              The caps for that motor should read .22uF so a standard OMC/BRP 580321 one could be adapted if they are bad. Or, you could go with the Orange Drop or Vishay capacitors.

              #21418
              Doug Wilson
              Participant

                US Member

                plug wire to ground is 6.23k ohms on each coil. The condensers that are in there at the moment were a couple of new ones from napa that are for a 60s Chevy. Worked well when I used them on an 4hp A-50 last year so figured that would work on this one. Will have to pull the flywheel off of another motor to compare the strength of a newer magnet.

                Doug

                how is it motors multiply when the garage lights get
                turned off?

                #21420
                Mumbles
                Participant

                  If they worked good on the A-50 they should work just as well on the K-50 to as both motors use the same caps.

                  #21424
                  jcrigan
                  Participant

                    US Member

                    You said that you polished the points real well. Did you take an ohm meter reading of just the points after you did this? They should be well under 1 ohm.

                    #21444
                    Doug Wilson
                    Participant

                      US Member

                      never thought to check points with a meter will try and check that this afternoon
                      Doug

                      Doug

                      how is it motors multiply when the garage lights get
                      turned off?

                    Viewing 9 posts - 1 through 9 (of 9 total)
                    • You must be logged in to reply to this topic.