83 750 with week spark

Discussion in 'Mechanics Garage' started by rich stone, Mar 24, 2021.

  1. rich stone

    rich stone New Member

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    Working on a project, it has spark but weak. I tried wiring in a spare coil, but no change.

    Any guidance on where to look?
     
  2. squirrelman

    squirrelman Member

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    check battery voltage first.
     
  3. Terry Smith

    Terry Smith Member

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    You may also have some corrosion in a connector, I had that on my ST1100 on the red connector which feeds power to/from the right bar switches. Low voltage at the ECU as a result.
     
  4. Allyance

    Allyance Insider

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    Check your terminals and connector to the coils, mine were corroded on my 83.
     

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