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Hot!Coil testing

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Trmt701
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2019/07/09 17:11:22 (permalink)
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Coil testing

When testing a coil for a 4 cycle, should all coils test the same or is it specific for the engine model and make. Same question for 2 cycles?

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    AVB
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    Re: Coil testing 2019/07/09 17:45:10 (permalink)
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    Most modern internally electronic trigger coils can NOT be tested without a specialized tester. The main service at most shops test these are the go/no go test by attempting to start an engine with them installed.
     
    About the only thing we can test for without the tester is to check for an opened secondary HV lead or shorted/open  secondary winding with the common DVMM we have access to. Trying to test the primary is nearly impossible due the internally design of the electronics and the fact the primary has a resistance of about 1 ohm.
     
    Now old points coil are field testable due to lack of electronics built-in.
     
    You are welcome to spend a few hundred dollars if you wish to purchase one these specialized testers but most are brand specific as far as I know.
    Trmt701
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    Re: Coil testing 2019/07/09 21:39:38 (permalink)
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    Thank you!!!
    Trmt701
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    Re: Coil testing 2019/07/29 15:16:58 (permalink)
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    Thank you
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