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You are watching: 2005 ford explorer 4.0 spark plug gap


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So I"m putting in new plugs right now...need to gap them to the correct specs.I"ve got a couple different gap numbers to go by. My Haynes/Chiltons states .062-.068. Then I"ve also seen different numbers on different forums. The plugs I bought are Autolite Platinum AP5144. Right now the plugs are gapped at about .048.So those who have a factory book that says what the gap should be, please post it. As a reminder...my truck is an "01 4.0L SOHC.THANKS!!ShaneEDIT: WHOOPS!! Looks like I"m logged in on my brother"s account!!
I just put those plugs in mine a few months ago. Initially, the truck ran beautiful, but now is starting to idle rough. Only has about 5,000 miles on them. Someone told me the wide gap is make them last 100,000 miles. The sticker under my hood shelp .062-.068. It was recommended to me to go with around.054 and replace them around 40,000 miles. BUT, like I said, I don"t like the way the truck idles now, so I will probably pull them this summer and replace with Motorcraft dbl plats.
I can"t remember if this applies to the 4.0L or not, but the 3.0L specifies double-platinums because one bank is "reverse" firing, tip to electrode instead of electrode to tip.I can"t see a reason to gap them any other way than specified by the decal under the hood.
yeah i"d just gap em in between .062" and also .068". if you much less (choose .048" for example) you *might* lose a bit of gas mileage because of a slightly smaller spark/less efficient burn.
stock gap on the sohc is ~.065. I changed out my plugs recently and gapped them come .050, I havent noticed any decrease in mileage or performance.
well the stock plugs on the 3.0 are .042" come .046"... i originally regapped to .032" with the juice, and noticed about a 1mpg loss. (in my case, probably a combination of the small gap AND the enrichment fuel being added to the n2o injection)
ALrighty ya"ll....I gapped them come .065 and am throwing them in tonight. And, if I have a bad time with them, I now know how to pull the inner fenders and swap the plugs.....semi-easily.

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I used the bosch platinum 2"s....as in 2 fitted electrodes with zero gaping required. They are absolutely perfect!
.065 gap, that was the iridium plug and that turned out to be to much gap for the plug to handle. Another thing was that the reach apparently matched that original Motorcraft plug
.708" but the Motorcraft plug supposedly had an extended tip and the Autolite does not which I still believe is why they don"t seem to hold up as stated in post above as they are running cooler. I then put in the Bosch +2"s (4305) and the truck ran good but gas mileage was down. I pulled the plugs after a few weeks and the amount of carbon fouling was unbelievable - only reason that made any sense once again was that they were too cold of a plug. I then ended up with some NGK TR55-IX"s, wrong again. Finally NGK TR55-1IX"s, let me say that the mileage is back up, power is back up, throttle response is great - very impressive so far to say the least. It runs great! Probably should have just got the Motorcraft plugs from the dealer and called it day looking back. There is so much wrong spark plug info on the Internet for the 4.0L for 01 thru 03 and even 04 it"s just stupid.