Which type sparkplug for Ford?
Laughing Gas
Joined: Feb 2003
Posts: 1,242
Likes: 2
From: Bartlett, TN
Originally Posted by Spectre 023
no sir...no gimmick. i really felt it...especially in the 2000-2500 range
Laughing Gas
Joined: Feb 2003
Posts: 1,242
Likes: 2
From: Bartlett, TN
Originally Posted by LxMan1
The coils only need changed if they fail, so no big expense there. The correct plugs cost about $32 so that's cheaper than cap, rotor, wires etc.
Last edited by Fifty4F100; Nov 15, 2006 at 05:43 PM.
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
copper core plugs are the best for N2O and forced induction because it produces a "hotter" spark since it is a better conductor of electricity.
I only use Autolites or Motorcraft plugs in my Fords.
I only use Autolites or Motorcraft plugs in my Fords.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Glen, A Haynes manual should give the specs to check them with an ohm meter. That's how I found a bad coil pack on my Windstar. 5 of the 6 fired great, one was dead. I do not know the ohm specs on the COP's. I have seen many have corroded springs inside the boot, which caused a bad contact to the plug.
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Senior User
Joined: Oct 2005
Posts: 128
Likes: 0
From: mission, tx
Originally Posted by scottspoerry
You'll have to forgive some of us who suspect that the difference you felt was due to the old plugs not working very well, rather than the new plugs you chose being superior to other new plugs.
im in highschool, and was blessed with this 3 and a half ton 5.4 (no sarcasm intended), but i obvioulsy dont have much money. i love the truck to death, and have big plans for it, but i cant pay for driving around getting 11 mpg all day. i heard some good things from a friend, so i decided to give them a try.
my previous plugs had been replaced 7000 miles ago, so naturally they were clean. i felt the power increase right away. previously, i would get about 320-330 miles to the tank, but my last 3 fills ive made i drove 345, 350, 345...so i did see a little, in both mpg and power
you dont need to believe me, but i did see a little
Laughing Gas
Joined: Feb 2003
Posts: 1,242
Likes: 2
From: Bartlett, TN
Originally Posted by LxMan1
Glen, A Haynes manual should give the specs to check them with an ohm meter. That's how I found a bad coil pack on my Windstar. 5 of the 6 fired great, one was dead. I do not know the ohm specs on the COP's. I have seen many have corroded springs inside the boot, which caused a bad contact to the plug.
Could I pull a few coils and see what they might be measuring to use as a baseline?
Laughing Gas
Joined: Feb 2003
Posts: 1,242
Likes: 2
From: Bartlett, TN
By the way for anyone wishing to know - the coils that I pulled all measured around 5 ohms - with 2 measuring about 4 ohms. I didn't get to the back passenger side. I found 2 boots on the drivers side that were wet and rusty. One even blew a rock out as I was blowing them out.
I did have Motorcraft dual platinum plugs and I replaced them with Autolight dual platinum. I'm sure there isn't any difference.
I did have Motorcraft dual platinum plugs and I replaced them with Autolight dual platinum. I'm sure there isn't any difference.
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Originally Posted by Fifty4F100
By the way for anyone wishing to know - the coils that I pulled all measured around 5 ohms - with 2 measuring about 4 ohms. I didn't get to the back passenger side. I found 2 boots on the drivers side that were wet and rusty. One even blew a rock out as I was blowing them out.
I did have Motorcraft dual platinum plugs and I replaced them with Autolight dual platinum. I'm sure there isn't any difference.
I did have Motorcraft dual platinum plugs and I replaced them with Autolight dual platinum. I'm sure there isn't any difference.