My truck is an '06.

 

I went with Motocraft again as well. The 3 mechanics told me due to the head design that there really wasn't much of an alternative. I've heard of this other spark plug on the market but they didn't think it would do much different.

Am I missing something here? Anyone have a link to the "better" spark plugs?

 

How long has your truck been custom tuned? I'm thinking that might have something to do with it.

 

Do a search here on Champion plugs. There have been a couple of instances of the engine running crappy only to find out that the plugs were broken. They came out intact, but the porcelain was cracked. There was one instance of the tip burning off and causing a hole in a piston. I have never been a fan of Champion plugs, but, they did design a one piece plug and some are using them successfully. They are expensive and I don't think they last as long.

 

anyone ever use antiseize when putting in new plugs then? wonder if this could help?
jim

 

It's part of the TSB, you're supposed to use high heat nickle anti-sieze on the shank, not on the threads. The idea is that the anti-sieze will allieviate the carbon buildup.

 

I ran the Edge canned tunes for about 30,000, usually level 3 with 93 octane, and then ran the custom tunes for about 5,000 prior to changing the plugs. Actually, the custome tunes should leave less carbon than the canned as it should be running with the timing set higher. I still think using a good detergent gas is a factor.

 

jfi, I started using a programmer two months after I bought my truck. I had mine changed right before I hit 36K. If any broke the dealer said they would cover them under warranty... but they all came out without a problem.

Add me to the positive list. I got almost 4K mile on mine now.

 

My next door neighbor and I changed our plugs out and replaced them all with the Champion 7989 plugs. He had 40k on his plugs and we broke one getting it out. Later the next day he fabbed up a home-made extractor and pulled the rest of it out. I had 20 k on my truck and every one of the plugs sounded and felt like they were going to break but all 8 came out in one piece. There was no way I was going to put the same design plug back in there and play that game again! Those 3 piece, breaking ba$tards had to go! I am very relieved that I have the one piece plugs and if they need to be removed, at least they will come out in one piece. Luck should have NOTHING to do with changing spark plugs.

 

New question....yesterday my check engine light came on and I'm throwing codes P0420/P1000. I cleared the codes to see if it was a fluke and it threw the light on again 144 miles later with 69k on the dial. Could my OB2 sensor be bad? Or could it be caused from my tune? A thought I had was that when Justin tuned my truck my spark plugs may have been going bad so whatever settings he might have tuned it for may have changed due to the spark plugs actually working now.

Anybody have any input on this? How much would the sensor be if I had to replace it?

Thanks

 

I went down to Troyer's and had my truck tuned on his dyno using the stock plugs which had 35K miles on them. I bought a set of Brisk plug from him and had them installed when I got home, gaped to. 040 as Mike said. 4K miles later I started getting P0420 and P0430 codes. Found I had two bad converter. Anita Troyer had Dynotech send me two new replacements and since I had them installed I replaced the plugs with Champions and have been running on stock tunes I am waiting until I get a chance to go back down to have Mike check my tunes before I run them again.

Good luck with yours

 

I definitely agree with you on that. I had this to say a few miles ago:
https://www.f150online.com/forums/20...-vs-plugs.html

 

I did run Edge for about a year before I went custom so it could have built up some carbon for sure.

 

Question: If you have a dealer change your plugs while still under warranty and they break, is it covered? It seems like it should be their job to fix it on their dollar whether it is under warranty or not, but you never know.

 

I ran can tunes (Hypertech/Edge<mostly) for almost 30K miles before I got my Troyer mail order tunes. At 35K I had Mike Dyno tune my truck, then around 35,800 miles I had my dealer swap the plugs out with the Brisk plugs. But just before I ran a can of Seafoam in the brake booster line. The mechanic at the dealer that changed them for me said they came right out. I mostly use Exxon 93 octane gas.



Depends on the dealer. This is something you need to check with them about before you let them do the job. I checked with 4 different dealers, two of them said yes and the other two said any extra work was going to be at my expense. When I called Ford's 800 number to ask about this, they said it was up to the dealer. Then the person I spoke with added that the warranty would only cover a broken plug if it was being replaced due to a warranty claim, like a misfire and the plug broke when they were replacing it. They would not cover it under warranty if I was just having a plug change.