Questions on Testing Ignition Coil

Discussion in 'Electrical' started by fabrozor, Nov 2, 2010.

  1. fabrozor

    fabrozor Active Member

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    1) Could you explain what primary and secondary is ?

    2) I don't anderstand what to connect to. One lead of the ohm-meter as red wire and the other connector lead as black wire. Where shall the ohm-meter red lead be plugged to ? and where shall the ohm-meter black lead be plugged to ? (please forgive my bad english speaking skill)

    3) You mean i shall put each ohm-meter lead between each ignition coil part where the sparkplug wire connects to ?

    4) Looking at this picture, are my tests wrong ?

    [​IMG]
     
    Last edited: Nov 2, 2010
  2. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    Re: Testing Ignition Coil

    Although I'm no great expert in this area you need a hoople for that perhaps an understanding of a coil and how it works may assist you in your test
    A coil for use in a petrol engine consists of a few main parts to the outside there is the primary windings this is just a lot of wire coiled together
    in the centre of the coil there is a carbon rod which has wire wrapped tightly round it secondary windings
    by feeding power through the primary windings from + to - through the coil connections a magnetic field is created in the coil and is maintained by the flow of power through the coil
    If the flow of power through the coil is interrupted then the magnetic field collapses this collapse of the magnetic field is captured by the secondary windings and the carbon rod and will exit the coil looking for earth the easiest path to earth for the collapsed magnetic field is to move along the plug leads to the plugs where it has to jump a gap at the end of the plug (spark) and arrives at earth

    I hope that helps rather than confuses

    Brian
     
  3. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    Re: Testing Ignition Coil

    I think that would be correct

    Brian
     
  4. fabrozor

    fabrozor Active Member

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    Re: Testing Ignition Coil

    Ok. Remains the other questions.
     
  5. Jack Klarich

    Jack Klarich Expert Member

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