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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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  #1  
Old 10-19-2007
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autolite plugs?

Are those good? I need to get rid of my bosch's...Any particular kind I should get? I would get motorcraft but no one sells them besides ford and I dont want to buy them online
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Old 10-19-2007
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double platinum. but i've had good luck with the copper ones. I know i have a 4.0 and you have the 3.0L....the same but different.
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Old 10-19-2007
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autolite = motorcraft... i agree get the double platinum ones
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Old 10-19-2007
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double platinum in my truck as well
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Old 10-19-2007
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double platinum 100% prefered. Im running them as well. and when my new coil pack gets in, i will be putting new ones in. Tho i do have a 4.0. either way no difference. Gatorblue is right Autolite=Motorcraft
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Old 10-19-2007
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like everyone else said, i got double platium with motorcraft wires
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  #7  
Old 10-19-2007
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If your gonna get Autolites, get the XP series Iridium. Part # for your '02 3.0L is XP104. Bout $4-6 depending on where u shop.
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  #8  
Old 10-19-2007
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Quote:
Originally Posted by 4x4offroad99
If your gonna get Autolites, get the XP series Iridium. Part # for your '02 3.0L is XP104. Bout $4-6 depending on where u shop.
Seems like double platinums are what everyone is running. Why would you suggest XP series Iridium over the DP?
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Old 10-19-2007
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From what I have learned iridium is a harder metal and hotter burning. The hotter the spark the more fuel/air is being burned, thus more power. I installed them in my 99 4.0, really couldnt tell a difference till I took one out at bout 75k miles, the electrode still looked brand new.
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Old 10-19-2007
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Quote:
Originally Posted by 4x4offroad99
From what I have learned iridium is a harder metal and hotter burning. The hotter the spark the more fuel/air is being burned, thus more power. I installed them in my 99 4.0, really couldnt tell a difference till I took one out at bout 75k miles, the electrode still looked brand new.
"hotter burning" can be a problem! The plugs need to be the proper heat range, and too hot can cause pinging (pre-ignition).

I agree, stay with the double platinums, or the new Motorcraft "fine wire" platinums that run well.
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  #11  
Old 10-19-2007
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Remember split-fire spark plugs? Now those were plugs that burned so hot that they caused pre-ignition, or burned a hole in the top of the piston. These XP's wont, Autolite did their homework on these plugs. Thats why they have specific part #'s for applications. They been burning in mine for over 4 years now, over 120k on them with no problems whatsoever.
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Old 10-21-2007
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so I installed them today..what would cause my truck to acellerate rough before 2rpms? Wrong gap? Not screwed in tight enough? I had trouble screwing them in since their isnt a whole lot of room, but I noticed when I accellerate, its kinda jumpy or rough at the very low end of my mph.
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Old 10-21-2007
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Quote:
Originally Posted by rondog
so I installed them today..what would cause my truck to acellerate rough before 2rpms? Wrong gap? Not screwed in tight enough? I had trouble screwing them in since their isnt a whole lot of room, but I noticed when I accellerate, its kinda jumpy or rough at the very low end of my mph.
How old are the plug wires? Chances are good that you damaged the plug wires when changing the plugs. The other possibility is you have a couple plug wires crossed.
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  #14  
Old 10-21-2007
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Never changed the plug wires and when you say another possibility is theyre crossed? Does that mean I plugged them into the wrong one? If so we can eliminate that because I marked them to make sure I plugged them in the same one.
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  #15  
Old 10-22-2007
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Did you check the gap on the plugs before installing them? It could be that the wires may have gotten damaged when you pulled them off the plugs you replaced. Be sure to listen and feel for a "snap" when you put the wires back on the plugs.
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Old 10-22-2007
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I would vote plug wires if you gap is right.
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  #17  
Old 10-22-2007
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The gaps are all right and im sure I snapped all of them on. So my next question, is how much are plug wires ? lol
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  #18  
Old 10-22-2007
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Use MotorCraft wires....part# and price for your '02 w/ a 3.0 is (p/n)wr5996, price is bout 33.99
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