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Old 06-20-2009, 02:13 AM   #1 (permalink)
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Default Testing a ignition coil

Iam working on 2004 sportman 500 ho
I was wondering if anybody knows the primary and secondary resistance along with primary and secondary insulation breakdown specs
thanks
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Old 06-20-2009, 05:29 PM   #2 (permalink)
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Just want to check my self. i know coils usually don't go bad. primary and secondary insulation breakdown on the coil should not have any resistance. and wouldn't you know it iam getting just that.
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Old 06-22-2009, 04:26 PM   #3 (permalink)
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My service manual says
Primary side: primary wire tab to ground .3-.5 ohms
Secondary side: high tension wire to high tension wire
cap installed 10500 ohms
cap removed 6300 ohms
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Old 06-22-2009, 05:17 PM   #4 (permalink)
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What is the high tension wire? tab to tab ? do you have the manual in a PDF by chance? thanks for the reply
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Old 06-22-2009, 06:49 PM   #5 (permalink)
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I have it in PDF and it is 137mb. I downloaded last year on one of the forums but it seems you can't do that anymore. Anyway if you know how I could e-mail certain pages let me know. I recently helped another fellow on this forum and I had to print the pages and then scan them and then e-mail them. Kind of a pain. I can highlight parts of it... but do not have the option to copy, send etc...
The picture shows taking the reading between the coil itself and the cap which is what snaps on the plug this should be 10500, it looks like you take the reading on the input of the coil and the end of the plug wire.
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Old 06-22-2009, 07:02 PM   #6 (permalink)
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thanks man that helped i isolated the problem to be the risistor cap
i have the correct ohms from the coil and wire but not through the cap. i have no continuity through the cap so i just need to replace it
thanks so much
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