[Diy_efi] FW: [fangle] Testing an inductance coil.

Wed Aug 17 16:38:59 UTC 2005

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Joe,

Why not try using a multimeter on the ohms or continuity range to test the  
ignition pickup?  You seem to be describing a small coil, probably  wound 
around a ring-shaped core, which fits around an ignition lead.  This  device will 
generate a small voltage in the winding of the coil every time the  spark plug 
lead passes current (i.e. every time that plug fires).

It will have a low resistance, almost zero typically.  

You could also try using an oscilloscope to look at the voltage waveform  
developed across the coil.  You should get an AC waveform ringing back and  forth 
a few cycles every time the plug fires.

Good luck!

Will C

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<DIV>Joe,</DIV>
<DIV>&nbsp;</DIV>
<DIV>Why not try using a multimeter on the ohms or continuity range to test=20=
the=20
ignition pickup?&nbsp; You seem to be&nbsp;describing a small coil, probably=
=20
wound around a ring-shaped core, which fits around an ignition lead.&nbsp; T=
his=20
device will generate a small voltage in the winding of the coil every time t=
he=20
spark plug lead passes current (i.e. every time that plug fires).</DIV>
<DIV>&nbsp;</DIV>
<DIV>It will have a low resistance, almost zero typically.&nbsp; </DIV>
<DIV>&nbsp;</DIV>
<DIV>You could also try using an oscilloscope to look at the voltage wavefor=
m=20
developed across the coil.&nbsp; You should get an AC waveform ringing back=20=
and=20
forth a few cycles every time the plug fires.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Good luck!</DIV>
<DIV>&nbsp;</DIV>
<DIV>Will C</DIV></FONT></BODY></HTML>

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