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Spark Plugs

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cgriffin_5139

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Which ons do you guy's use going to be replacing them. On my 98 4.0 ohc, any Feedback would be great.
 



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motorcraft

-Rich
 






Do NOT use Bosch - there are more reports of people having problems with Spit-fire (aka Splitfire) than probably any other plug. Autolites are also decent (Motorcraft and Autolites are made by Honeywell).
 






I use Motorcraft double platinum.

Good luck ....
 






Don't use Bosch. I replaced my original plugs with at 105K, just put Motorcraft in at 108K.
 






I have always used the Bosch Double Platnium
and never had a problem with them.
 






Motorcraft, Autolite, or Bosch double Platnium.
 






I have always used the Bosch Double Platnium
and never had a problem with them.

How do you gap them (you're talking about the 2+, correct)? I know they say they are "pre-gapped" but I have never had a plug that didn't need to be corrected.
 






Oh no! Not another spark plug debate:eek:

Bosch, definately not.

I'm running NGK V-Grooves in my 97 5.0 Mounty & like them. I've only had them in since May so I will see as time tells.
 






How do you gap them (you're talking about the 2+, correct)? I know they say they are "pre-gapped" but I have never had a plug that didn't need to be corrected.
Bosch makes a standard plug as well, not +2 or +4.
 






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