testing ignition coil on ea/eb/ed etc - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
 
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post #1 of 3 (permalink) Old 04-13-05, 04:56 AM Thread Starter
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testing ignition coil on ea/eb/ed etc

now ive tried to test the coil of a couple of ea and eb 6's but have had no luck,....

i just hooked up the coil directly to the battery and hooked a spark plug to the coil and earthed it....

it does generate a spark but its so small it can barely be seen!!!!

i also test a coil off a vl (it looked the same)

now whats going on with these newer style coils - why can u test them like this????

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post #2 of 3 (permalink) Old 05-01-05, 10:40 AM Thread Starter
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Re: testing ignition coil on ea/eb/ed etc

wow this got a huge response.....I cant beleive no one has ever tryed to test their coil....
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post #3 of 3 (permalink) Old 05-02-05, 05:29 AM
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Re: testing ignition coil on ea/eb/ed etc

OK the best way to test the coil is in situ by:

a) Buying a noid light (Super Cheap Repco etc usually used to test fuel injectors) and plug it into the low tension connection that normally plugs into the coils see if it flashes when you turn the engine over.
b) Put a spark plug with 6mm gap into the high tension lead that goes from the coil to the distributor and see if it has a bright spark when you turn the engine over.

These test are better than off engine tests. You can check the primary and secondary resistance of the coil off engine (0.41 to 0.45 ohms and 7.12 to 7.87 ohms respectivly) but I have seen bad coils test with good resistances but fail the foregoing on engine tests.

Regards Blue
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