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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 05-24-2010
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Plug change time

Well since i have 153k I think its time.And yes they are the original plus and the truck is a 01.What should I be using since its bone stock.What plugs are stock?
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  #2  
Old 05-24-2010
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try Autolite Double Plat. thats what i use. stay away from Bosch though, i tried them on my truck before and it didn't like em.
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Old 05-24-2010
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Quote:
Originally Posted by d1zturbe3d View Post
I use Autolite Double Plat.
when i had my mustang that car hated autolite plugs
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Old 05-24-2010
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our trucks come with motorcraft stock, Ive heard that autolite and motorcraft are basically the same thing. If you want to play it safe just get motorcraft ones.

THEN AGAIN...i have a 3.0, i don't know whats exactly recommended for a 4.0
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Old 06-21-2010
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bump. What is the best spark plug for the 4.0l SOHC? I was thinking autolite double plat., but does anybody have a part # or something. I dont want to get the wrong plug.
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  #6  
Old 06-21-2010
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if you don't like what the parts store gives you (most likely champions) just ask them if they have the motorcraft plugs for your truck. or go right to ford.
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  #7  
Old 06-22-2010
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I just went to Ford and got the factory platinums.
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Old 06-22-2010
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Motorcraft plats
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Old 06-22-2010
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motorcraft plugs for sure. dont waste your money on bosch.
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  #10  
Old 06-22-2010
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I'll be installing the NGK V-Power TR55 3951 tomorrow so hopefully they work good for me
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  #11  
Old 06-22-2010
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Replaced mine at 50k with Autolite Double Platinums......... and just a word of advice, have the parts store cross reference vs. the part number in the manual........ Autozone showed they didnt stock the plugs I needed until I gave them the actual part number..... crazy computers.....
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Old 06-22-2010
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ill go to Ford dealership this weekend and probably pick some up.
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  #13  
Old 06-23-2010
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I used Autolite Iridium plugs
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  #14  
Old 06-23-2010
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Quote:
Originally Posted by Goats View Post
I'll be installing the NGK V-Power TR55 3951 tomorrow so hopefully they work good for me
UMMMMM yea ^ these plugs wont work i ended up going to ford and getting SP412 since there were a heat range cooler and instock and

NGK V-Power TR55 3951 .054
NGK G-Power Platinum TR55GP 3403 .054
NGK Laser Platinum PTR5F-11 6579 .054
NGK OE Laser Iridium ITR5F13 6044 .054
NGK Iridium IX TR55IX 7164 .054

maybe none of those will work
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  #15  
Old 06-23-2010
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i replaced the plugs in my 4.0 with motorcraft plugs... sp440
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Old 06-23-2010
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i switched to champion copper plus spark plugs
and my fuel has shot up
i am getting 151 kliks before my fuel gauge even starts to move now
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  #17  
Old 06-23-2010
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Quote:
Originally Posted by cheese_man View Post
i switched to champion copper plus spark plugs
and my fuel has shot up
i am getting 151 kliks before my fuel gauge even starts to move now
Did you notice any difference in performance? Also what type of driving are you doing? (highway, city)
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  #18  
Old 06-23-2010
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both
idle is very smooth now
acceleration is kick ***
engine fires after the 2nd crank ( usually took 5 or more with the factory iridium plugs )
my fuel ecomony is still rising
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  #19  
Old 06-30-2010
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i use Bosch 4"s and my truck fires right up no problem 4,0 ohv 1998 162k miles
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  #20  
Old 06-30-2010
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so champions are the way to go? Cause I am going to change mine this weekend and I have a 4.0 and was thinking about going with ngk v power plugs but now I read this
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  #21  
Old 06-30-2010
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No, I never run champion in my vehicles. Champions are stuck to my lawnmowers. Autolite/Motorcraft is the way to go
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