You can consult the parts house where you purchased the plugs and they will probably have the exact gap information for the model, make and plug type. Now days about 50 thousands is pretty well normal. If it's an older model try about 35-40 thousands. The difference is the newer models have a hotter ignition and run at a lot higher voltage. Also the plugs are designed different on some of them. P.S. you can get a little disc about the size of a half dollar that starts out at pratically '0' and goes up liner to about 65 - 70 thousands. Costs about a buck and will fit on your key chain. dhgill1949
Okay, you can go for the spark plug manual where you used to purchased it for a good gap settings.or if no so search for a feeler gauge then insert it in the gap.but for the feeler gauge is of range so the one that you will use for the first plug must for the rest.thank you
SOURCE: Spark Plug gap settings.
Look on you're emissions tag under the hood they should be on there.
SOURCE: spark plug gap ford explorer 4.0 6cylinder
Our 2003 Explorer V6 requires:
0.052 - 0.056" plug gap
SOURCE: spark plug gap
Look under the hood, either on bottom of hood or near radiator, the proper gap for your vehicle should be on the emissions info sticker (white sticker about 3" x 4").
If you're replacing the spark plugs in your car
engine, you'll need to set the gap before reseating the
spark plug. The gap is the distance electricity arcs between the ground
electrode and center electrode. The gap must be set correctly to ensure
maximum performance. Here's how to set the gap of a spark plug.
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