Good plug?

davey300 · 09-19-2009, 09:33 PM

Gettin ready to put plugs in my 4.2 v-6, it has Motorcraft platinums in it now. just wondering if i should keep the same plug or go with a different brand? Ant info would be greatly appreciated!! I just bought the truck and took a plug out and it looked pretty worn out... sorry for all the posts but you all have helped me out alot in the past!!!! Thanks dave

Case 7230 · 09-20-2009, 03:06 AM

use Motorcraft, Fords don`t like anything else.

davey300 · 09-20-2009, 03:36 AM

The motorcrafts i took out was so bad!!! i dont mean oil burnt, but the electrode was burnt down to 90 thousands!!!!!! Could they have been the factory plugs? It has 130,000 on it.. Thanks

Case 7230 · 09-20-2009, 06:08 AM

Could have been the original but definately time for new plugs.

bradrhale · 09-20-2009, 07:27 AM

some people like the platinum plugs. if you break it down into science though, they are of no greater benefit to you unless you upgrade the ignition system to burn hotter. this is why i go with the regular plugs for the stock vehicles and the higher dollar plugs for the higher voltage systems.

tjzz4 · 09-20-2009, 09:35 AM

The factory plugs have paint on the top of the plug where the wire connects... easy to tell.

davey300 · 09-20-2009, 02:53 PM

Yes they had pait spots on the tips and the wires had 1999 on them also!!! WOW i would never thought both would have lasted that long. the truck ran fine i just wanted to pull a plug to look at it. glad i did. i just finished tunning up the ole girl! Thanks

09-19-2009, 09:33 PM	#1
davey300 Full Member Join Date: Mar 2009 Posts: 15	Good plug? Gettin ready to put plugs in my 4.2 v-6, it has Motorcraft platinums in it now. just wondering if i should keep the same plug or go with a different brand? Ant info would be greatly appreciated!! I just bought the truck and took a plug out and it looked pretty worn out... sorry for all the posts but you all have helped me out alot in the past!!!! Thanks dave

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09-20-2009, 03:06 AM	#2
Case 7230 Senior Member Join Date: Dec 2007 Posts: 547	use Motorcraft, Fords don`t like anything else.

09-20-2009, 03:36 AM	#3
davey300 Full Member Join Date: Mar 2009 Posts: 15	The motorcrafts i took out was so bad!!! i dont mean oil burnt, but the electrode was burnt down to 90 thousands!!!!!! Could they have been the factory plugs? It has 130,000 on it.. Thanks

09-20-2009, 06:08 AM	#4
Case 7230 Senior Member Join Date: Dec 2007 Posts: 547	Could have been the original but definately time for new plugs.

09-20-2009, 07:27 AM	#5
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,028	some people like the platinum plugs. if you break it down into science though, they are of no greater benefit to you unless you upgrade the ignition system to burn hotter. this is why i go with the regular plugs for the stock vehicles and the higher dollar plugs for the higher voltage systems.

09-20-2009, 09:35 AM	#6
tjzz4 Senior Member Join Date: Oct 2007 Posts: 277	The factory plugs have paint on the top of the plug where the wire connects... easy to tell.

09-20-2009, 02:53 PM	#7
davey300 Full Member Join Date: Mar 2009 Posts: 15	Yes they had pait spots on the tips and the wires had 1999 on them also!!! WOW i would never thought both would have lasted that long. the truck ran fine i just wanted to pull a plug to look at it. glad i did. i just finished tunning up the ole girl! Thanks