onefastbob said:
It has been a while since I have done it myself, but you can just regap plugs to the correct gap size though if you can't find the correct model number, right?
onefastbob said:This is for future reference. Today while snooping around the www.brenspeed.com website I noticed that according to Brenspeed there are 2 completly different spark plugs for the 2008 Bullitt and 2008 Mustangs. Something about before and after Feb production date. I then checked the Motorcraft website and indeed there are 2 different plugs listed. SP462 Motorcraft gapped at .054 for cars with black coil boots and SP509 gapped at .041 for cars with brown coil boots. I realize that it will be some time before any of us need plugs, but this may be a big issue when the time comes to change them. It would not be good to try to put the wrong plugs in as the threads may be different.
No there was a change in the plug, it may have a different thread (different cylinder head). I will investigate this with my local Ford dealer tomorrow.BB2008 said:It has been a while since I have done it myself, but you can just regap plugs to the correct gap size though if you can't find the correct model number, right?
Thanx Bob. That info would be good for the Bullitt.08 archives.onefastbob said:No there was a change in the plug, it may have a different thread (different cylinder head). I will investigate this with my local Ford dealer tomorrow.
I wonder if it's just a plug change or if more has been changed. The boot color could be just an indicator, maybe not.onefastbob said:This is for future reference. Today while snooping around the www.brenspeed.com website I noticed that according to Brenspeed there are 2 completly different spark plugs for the 2008 Bullitt and 2008 Mustangs. Something about before and after Feb production date. I then checked the Motorcraft website and indeed there are 2 different plugs listed. SP462 Motorcraft gapped at .054 for cars with black coil boots and SP509 gapped at .041 for cars with brown coil boots. I realize that it will be some time before any of us need plugs, but this may be a big issue when the time comes to change them. It would not be good to try to put the wrong plugs in as the threads may be different.
I also think it has something to do with the poorly designed plugs that they have had so much trouble with. I want to get to the Ford dealer and look at the 2 different plug numbers.08 Shifter said:Check it out,Might have something to do with the TSB related to the plugs breaking off in the heads because of carbon buildup.Hopefully a redesign to prevent this.The TSB means that the plugs replaced get a coat of neverseize to prevent this.
That's it. Now where did I read it?????08 Shifter said:Check it out,Might have something to do with the TSB related to the plugs breaking off in the heads because of carbon buildup.Hopefully a redesign to prevent this.The TSB means that the plugs replaced get a coat of neverseize to prevent this.
Take you're camera too. :smile:onefastbob said:I also think it has something to do with the poorly designed plugs that they have had so much trouble with. I want to get to the Ford dealer and look at the 2 different plug numbers.
I believe that PZT1F (SP462 four pack) plugs were the fix for the TSB for the carbon build up breaking plugs, probably just a new coating like they did for the build up on the intakes a few years ago.08 Shifter said:Check it out,Might have something to do with the TSB related to the plugs breaking off in the heads because of carbon buildup.Hopefully a redesign to prevent this.The TSB means that the plugs replaced get a coat of neverseize to prevent this.
Ford has had terrible problems with their spark plugs and cylinder heads on 5.4 and 4.6 3 valve engines and 2 valve engines. I think there has been a change in the head and the plug. I will find out tomorrow.RCSignals said:that's interesting boB.
For the Marauder there have been a few reported Spark Plug 'changes' but they all turn out to be part number changes only. I wonder if that is what has happened here?
Most of our Bullitts may allready have the new style in them. I will have more info tomorrow when I inspect the new spark plug.Jim08 said:Hi Bob, I got my Bullitt 15th of Jan, have not looked at the plugs yet,so I don't know if they are black or brown, but can we find out if the newer plug is better ? and if so should we be going back to the dealer to get them changed ?