---- Anthony Rhodes <spamiam@comcast.net> wrote:
> Terry,
>
> You can manually test the coil. Take the distributor ground wire off the coil
> and place a jumper wire (well insulated)
Normally, I am a strong advocate of testing components before replacing them.
But this test is incomplete, the coil may pass while still being defective (for
example, an inter-winding short or broken laminations). Coils are also much
easier to change than most components. So I feel that a better test is to
simply substitute a "known good" coil.
If you don't happen to have a 3 ohm coil handy, chances are that you can buy a
1.5 ohm coil plus a ballast resistor at your friendly local auto parts store.
The combo will work fine for testing (I've actually driven for many years with
an external ballast and a cheap 1.5 ohm coil). I see that O'Reillys has a
cheap coil listed for $20 and in stock at my local store; the ballast shouldn't
be more than $10 or so (O'Reillys has it listed for $6). (Both are listed for
a 68 Dodge Dart with a 225 slant 6.)
Randall
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