Spark Plugs

[cgriffin_5139]

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

 

[churd69]

motorcraft

-Rich

 

[Homerexplorer]

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).

 

[aldive]

I use Motorcraft double platinum.

Good luck ....

 

[stol]

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

 

[davidmmm69]

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

 

[Jason94sport]

Motorcraft, Autolite, or Bosch double Platnium.

 

[Homerexplorer]

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.

 

[Dan Whitaker]

Oh no! Not another spark plug debate

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.

 

[Jason94sport]

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.