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- Jun 2, 2012
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- Vehicle Year
- 1994
- Make / Model
- Ford
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Yes, the "spark plug mod"
Popular for awhile, doesn't actually change power, although some will swear it does, lol
Fords coil packs have 2 spark plugs connected to one coil, in the 4cyl, V6 and V8s
So you only have 2 coils in each of your coil packs, that's why there is only 3 wires on each, common 12v wire and 1 ground wire for each coil in the pack
The two spark plugs are hooked up in series to the one coil
What this means is that one spark plug fires from center to tip(normal spark) and the other fires from tip to center(reverse spark)
Some one got it in their head that tip to center would be in some way weaker than center to tip, it isn't, but once in their head they ran with it, lol
The voltage at each spark plug is the same because they are both on the same coil, so one spark direction is not better than another
But what IS important is the type of spark plug you should use in this type of system
Single coated spark plugs usually have the tips coated so the tips last longer since they get the most wear in "regular spark" direction
But the other spark plug on that coil would wear like regular copper because thats what it is, no coating
So don't use single coating spark plugs, waste of money, use regular copper, no coating, or DOUBLE coating so both tip and center have the coating
Platinum or Iridium are the most popular coatings
And the above does lead to some confusion
Ford literally buys millions of spark plugs a year
And they would buy 500,000 platinum tips, and 500,000 platinum centers because it's cheaper than 1,000,000 double platinum plugs
Then install them as needed for regular spark and reverse spark directions, so same longevity as double platinum without the cost of double platinum
So when people would look up factory spark plug numbers they would see the 2 different numbers, tips and centers, lol
Because that's what was installed at the factory
You can do the same, or just use double platinum, or regular copper
Popular for awhile, doesn't actually change power, although some will swear it does, lol
Fords coil packs have 2 spark plugs connected to one coil, in the 4cyl, V6 and V8s
So you only have 2 coils in each of your coil packs, that's why there is only 3 wires on each, common 12v wire and 1 ground wire for each coil in the pack
The two spark plugs are hooked up in series to the one coil
What this means is that one spark plug fires from center to tip(normal spark) and the other fires from tip to center(reverse spark)
Some one got it in their head that tip to center would be in some way weaker than center to tip, it isn't, but once in their head they ran with it, lol
The voltage at each spark plug is the same because they are both on the same coil, so one spark direction is not better than another
But what IS important is the type of spark plug you should use in this type of system
Single coated spark plugs usually have the tips coated so the tips last longer since they get the most wear in "regular spark" direction
But the other spark plug on that coil would wear like regular copper because thats what it is, no coating
So don't use single coating spark plugs, waste of money, use regular copper, no coating, or DOUBLE coating so both tip and center have the coating
Platinum or Iridium are the most popular coatings
And the above does lead to some confusion
Ford literally buys millions of spark plugs a year
And they would buy 500,000 platinum tips, and 500,000 platinum centers because it's cheaper than 1,000,000 double platinum plugs
Then install them as needed for regular spark and reverse spark directions, so same longevity as double platinum without the cost of double platinum
So when people would look up factory spark plug numbers they would see the 2 different numbers, tips and centers, lol
Because that's what was installed at the factory
You can do the same, or just use double platinum, or regular copper
