2002 Spark Plugs
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Senior User
Joined: Jul 2005
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2002 Spark Plugs
OK, I know there are probably a ton of threads on this subject, but I am not that good at digging them out.
I just picked up my Ranger, 2002 XLT Supercadb with 4.0 2wd. I want to replace the plugs because it doesnt run real smooth at idle. At 1500 rpms and up it is smooth as silk, but at idle, which runs at about 700rpm on the tach, it "bumps" to describe it best. Besides, I just got it and want to "freshen it up" so to speak!
So, What do people use? The Expy forums say Motorcraft platinum, ONLY. I used NGK Vpowers on my Dakota with great results, and my old ASTRO ran awesome on splitfires.
Anyone got an opinion?? (LOL)
I just picked up my Ranger, 2002 XLT Supercadb with 4.0 2wd. I want to replace the plugs because it doesnt run real smooth at idle. At 1500 rpms and up it is smooth as silk, but at idle, which runs at about 700rpm on the tach, it "bumps" to describe it best. Besides, I just got it and want to "freshen it up" so to speak!
So, What do people use? The Expy forums say Motorcraft platinum, ONLY. I used NGK Vpowers on my Dakota with great results, and my old ASTRO ran awesome on splitfires.
Anyone got an opinion?? (LOL)
Elder User
Joined: Nov 2006
Posts: 696
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From: Lynchburg, VA
Motorcraft or Autolite DP. I am a NGK fan for my euro cars, but for the truck I went autolite and am very pleased.
https://www.ford-trucks.com/forums/1...and-wires.html
https://www.ford-trucks.com/forums/1...and-wires.html
Elder User
Joined: Jul 2006
Posts: 601
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From: Denver
AND - make sure you get the right plugs!!! A lot of the plug manufacturers list the plugs for the 4.0 ohv and the 4.0 sohc as being the same - THIS IS NOT CORRECT! If you put ohv plugs in the sohc it will not run right - it will ping, etc. because the plug reach is incorrect.
Stock plugs are Motorcraft AGSF34FP, which crosses to Autolite 5144 (different suffixes for copper, platinum, double platinum, etc.)
Stock plugs are Motorcraft AGSF34FP, which crosses to Autolite 5144 (different suffixes for copper, platinum, double platinum, etc.)
Elder User
Joined: Nov 2006
Posts: 696
Likes: 0
From: Lynchburg, VA
Autolite had a rebate good for $1.25/plug last year. You may want to check to see if it was extended.
http://www.autolite.com/rebate/save24.php
http://www.autolite.com/rebate/save24.php
Posting Guru
Joined: Dec 2002
Posts: 1,283
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From: Racine county, WI
Originally Posted by afsigma21
So, What do people use? The Expy forums say Motorcraft platinum, ONLY. I used NGK Vpowers on my Dakota with great results, and my old ASTRO ran awesome on splitfires.
I'm running NGK in my 4.0 OHC and love them. The stock Motocraft plugs were highly disappointing. On average they eroded 22 thousands in 80k. That's a lot for a platinum.
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