[07_427R]

Its a tough call. There doesn't seem to be a wide variety of choices right now. The guys with the more factory normally aspirated engines have a good one piece Champion 7989 plug to choice from but thats the only one so if they don't like that plug they are stuck unless they decide to have some sort of on going maintenance program pulling their old plugs. I'm not sure if thats even the perfect fix. Us supercharged guys are in a bit more difficult situation.There is a one piece Brisk plug but its sort of an in-between heat range plug so I don't really know how it will work. I've been told its a perfect fit for my car but we've all heard that sometime in the past so its a wait and see thing. Also Roush doesn't recognize that plug and so any changes I make could effect 'warranty' so I need to make sure I pick the best plug. Its a catch 22 right now. Its like alot of things, you do what you think is right for you and see how it works. At least we are only talking spark plugs...I can think of a few other issues that could be a lot more troubling...

[JAY'SRED02]

I guess when I take my car to the dealer to get the recall fixed it would be a good idea to have the plugs and let my dealer install them since its still under warranty. That way if they break with them they can fix the problem.

[07_427R]

Originally Posted by JAY'SRED02 I guess when I take my car to the dealer to get the recall fixed it would be a good idea to have the plugs and let my dealer install them since its still under warranty. That way if they break with them they can fix the problem.

Since the Spark plugs aren't a recall item and only a TSB, if they replace them or even perform the TSB and they happen to break one or more plugs, its your cost not there's. That been discussed also. I'd talk to the service dept and get whatever they say in writing. I've heard dealers are trying to keep this plug issue hush, hush.

[BLACJAC]

Arnt These Plugs 100,000 Mile Plugs , Mine Say Tune Up @ 100,000 Miles

[JAY'SRED02]

Originally Posted by 07_427R Since the Spark plugs aren't a recall item and only a TSB, if they replace them or even perform the TSB and they happen to break one or more plugs, its your cost not there's. That been discussed also. I'd talk to the service dept and get whatever they say in writing. I've heard dealers are trying to keep this plug issue hush, hush.

I'm just saying if one breaks on them at least they can fix it instead of it breaking in my garage. I know its not a warranty issue and I plan on paying them the labor for the install,but if one breaks and gets down in the heads they are going to have to fix it... They know theres an issue with the plugs thats the reason for the TSB. The reason ford hadn't had a recall yet is how many people change their plugs at 16,000 miles? Not enough issues yet.

[07_427R]

Originally Posted by JAY'SRED02 I'm just saying if one breaks on them at least they can fix it instead of it breaking in my garage. I know its not a warranty issue and I plan on paying them the labor for the install,but if one breaks and gets down in the heads they are going to have to fix it... They know theres an issue with the plugs thats the reason for the TSB. The reason ford hadn't had a recall yet is how many people change their plugs at 16,000 miles? Not enough issues yet.

Yes, you are correct!!! Better to have the car where they car fix it if there is an issue with the plugs.

[1FUN4RD]

I just turned 5000 miles on my 07. I am sure glad I seen this post.. My next mod will be to replace those stock plugs with the Champion 7989s!!

Left rep for ya 427!!

[killbee]

The 08's are designed diffrently using a plug similar to the more common 1 peice plug. I had 5 of 8 break off leaving the ground sheild in the head. I followed the TSB exactly and even added several hours of soak time. Cost me $240 + a tow bill to the dealer to fix it. This was a discounted price due to some contacts at the dealer. Normally the service bill would have been around $500. There were equal amounts of carbon on all the plugs but some seized and some didnt. I think its contributed alot to faulty plugs. I tried to take apart one of the plugs that came out whole and couldnt get it to come apart like the others. The ones that seized come apart using less than 15lbs of torque. Who knows but it sure is a pain. Just make sure to anti-seize the shankbelow the thread but not near the end. It doesnt take much just a very light coating. This will keep the carbon build up off of the shank.

[07 STROKER]

im kinda screwed with my nitrous set up........great...well on the upside i plan on inspecting my plugs every month....hey is anyone else here breaking the coil clips when removing them from the coil on plug? ive had to splice in 2 now!

[BLACJAC]

I TALKED TO THE SERVICE DEPT. @ MANTILLA FORD HERE IN CT. THEY HAVE A HOT ROD DIVISION AND THEY ARE AN SVT DEALER, THEY SAID DONT GO CHANGING UR PLUGS PREMATURELY, IT WONT MATTER ,THERE A BITCH TO GET OUT AT ANY MILEAGE, IF U CHANGE THEM @ 5000 OR 90,000 MILES. HE TOLD ME THEY HAVE SPECIAL ADOPTERS FOR THEIR TOOLS TO GET THEM OUT AND ITS NO PROBLEM.JUST TIME CONSUMING THE TOOLS ARE PICTURED ON ONE OF THESE REPLYS ON THIS THREAD. HERES THE KICKER THE CHARGE IS 3-4 HRS LABOR PLUS THE THE PRICE OF THE PLUGS. SO U ALL HAVE 100,000 MILE PLUGS ,IF U HAVE NO PROBLEMS WITH THESE PLUGS THEN LEAVE THEM ALONE AND HAVE A REPUTABLE FORD DEALER DO IT @ AROUND 90,000 MILES , THATS WHAT IM DOIN!!!!! I ALSO USE LUCAS FUEL INJECTOR AND VALVE CLEANER EVERY 3-4000 MILES THIS WILL ALSO HELP KEEP THE PLUGS CLEAN

[07_427R]

I guess we all do our own maintenance on our own terms. Some do it ourselves and some rely on the dealership to do it. Either way whatever works for the car owner. We have car club tech days and we've replaced several sets plugs without issue. I doubt my car will see the inside of a dealership garage unless there's a major recall on something. My advice to everyone is do what you think makes the most sense for yourself. If someone is going to drive it the vehicle for 70,000+- miles and then sell it, I wouldn't think about pulling plugs. Let that be somebody else's issue. Mine are coming out sometime before winter sets in.

[aleykat271]

Thanks for the info.These are the plugs I have in my Stang.There was a thread on here a while back to see if you have the revised heads,to check which plugs you have,I pulled one to see if I did,and I do,plug came out and looked good,but I've only got 10,000 my car.Maybe I should check with my dealer about the TSB.Whats the number on the TSB???

Originally Posted by 07_427R I'm sure that not all cars will have issues. Thats why Ford has made it a TSB and not a recall but the problem seems to get worse with more mileage and carbon build-up on the outer electrode. I read on one forum that a guy tried to pull his plugs with only 17,000 on it and broke a few. I've read that you should do something to mitigate any possible trouble by the 25,000 mile mark. Low mileage cars may not have too many issues but what I hear happens is alot of carbon builds up around the lower outer electrode and cylinder head and when you try to remove the crimped two piece design plug out you twist off the top piece since the lower half stays in the head. This is just a heads up for people that may want to investigate the issue. Breaking a plug off in the head can be costly. Here's what the plugs look like when issues develop. Broken plugs: Too much antiseize on the barrel area following the TSB.

[07_427R]

tsb 08-7-6

[aleykat271]

Thanks..I've got a good relationship with my dealership,I'll have to ask them if this includes the 08's also.....

Originally Posted by 07_427R tsb 08-7-6

[2006greyGT]

I have 20,000 on my 06... about 2000 of that supercharged... I thought that the plugs were good for a lot longer than 20,000. Is there any reason to change them sooner if the only time they break is when they are removed? what is the expected life of the stock plugs.. someone ^ said 100,000 miles, is that correct?

[BLACJAC]

yes thats correct 100,000 miles , but a safer replacement is around 90,000 if u dont have a problem with them , on supercharged engines im not sure probably the best people to ask that question is the manufactor of the supercharger.

[2006greyGT]

I will just stay off the juice and blow it up long before 90,000.. my stroker replacement won't have these plugs,EVER !!!!!