Re: Is this normal? spark plug with pic
Originally Posted by skimmin
I've been told that newer vehicle tend to run slightly leaner then older vehicles mainly for emissions.
Not since the 1970's ...
Virtually all newer vehicles run very close to ideal mixture when in closed loop because that's what the three-way cats need to do their job.
The plug in the picture looks just fine.
I can't think of any good reason to replace a new Motorcraft coil with a Screamin Demon.
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