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Posted - 07/22/2011 :  10:06:44 AM  Show Profile Send andymac35 a Private Message  Reply with Quote
I figured I would need to change the plugs when I got this truck, but when I pulled some to check, they looked very recent. They are autolite AP 104's.

I have always run autolite's in my Fords, but a little reading suggests that many like the motorcraft plugs a lot better. Also, I prefer using good old copper plugs and just changing them more often.

Another thing, I noticed the gap was like 0.42 vs the recommended 0.52 on the plugs I looked at. Since gaps widen as the plug ages, should I even care. They were that "correct" brown color that you want to see when you check your plugs.

Should I just leave it be?

previous trucks:
1989 F-150 302 4-speed 4x2
1999 rc/sb 3.0 5-speed 4x2
2002 FX4 twin shifter
2005 Ram V8 6-speed 4x4

current truck:
2000 Ranger supercab 4x2, 4.0 ohv 5-speed

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Posted - 07/22/2011 :  6:52:10 PM  Show Profile  Send DJaye an AOL message Send DJaye a Private Message  Reply with Quote
I run Autolite Coppers in my truck, one or 2 staged colder then normal. Some like Platinum plugs, some dont.. one isnt really better then the other under normal/factory internals.

As for the gap, set your gap to the 0.052. If your adding power, I like ' A nickel for fifty! ' go 0.005 greater for every 50hp you add.. thats the normal ' voodoo ' I subscribe to.

What does ' factory ' mean?

Wise words : "To me a day that goes by that you learn nothing is a day that was basically wasted. " -Zoom, Admin GE.

Edited by - DJaye on 07/22/2011 6:54:31 PM
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Port Orchard

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Posted - 07/24/2011 :  11:07:35 PM  Show Profile  Visit 440volt's Homepage Send 440volt a Private Message  Reply with Quote
I run NGK coppers, gapped at 52 thousands, and changed every 6 months, when I change from the summer wheel/ tire combo to the summer set, and vice versa. Life if different when you have increased combustion chamber pressure.


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