Ford Blown Out Spark Plug

[Ruune]

if I still had a ford, I'd bypass the problem altogether:
http://www.rpmoutlet.com/musv8sniper.htm

[whitlock87]

Anhaney
If I install new plugs in my Expeditions, would that help me to prevent this issue?
If so what plugs would you recommend?

[Ruune]

no. the problem stems from the threads in the cylinder head stripping out, due to the load placed on them by the compression in the cylinder. That is, unless the piston itself is impacting the cylinder(s) and pushing the plug out.

[spooner]

sorry for the slow response
Expeditions did not have the 3 valve untill 05 whitlock87 you still have 2 valve heads but the heads on your truck are not subject to blowing out plugs in my expreience I went back through all our tickets in the last 4 years and we havent had a 02 or 03 blow out a plug.

Also in every case I have had the cause of the plug blowing out was loose plugs you check the other cyls and allways find a plug or two that was loose to the point that you could take it out by hand. I contribute this to not eneough threads to keep the plugs tight. We proactively sold plug changes and still do under this pretense and found several more factory plugs that were not tight. We have never had a replaced plug get blowen out only factory installed plugs. The replacement motorcraft plug has more threads on it(I don't know if this helps since the head still only has 3) and is also made from a different alloy I am not sure if it is nickel or not but know it appears different and is non-magnetic.

Hope this info helps but it is just MY experiences and I am sure some where someone has blowen out a replacement or a newer than 01 plug.IMO if you are over 60k change your plugs and don't worry about it.

[Wake Bandits]

if I still had a ford, I'd bypass the problem altogether:
http://www.rpmoutlet.com/musv8sniper.htm

Do you have smog checks in TX?
Somtimes mods will push the numbers up.

[Wake Bandits]

sorry for the slow response
Expeditions did not have the 3 valve untill 05 whitlock87 you still have 2 valve heads but the heads on your truck are not subject to blowing out plugs in my expreience I went back through all our tickets in the last 4 years and we havent had a 02 or 03 blow out a plug.

Also in every case I have had the cause of the plug blowing out was loose plugs you check the other cyls and allways find a plug or two that was loose to the point that you could take it out by hand. I contribute this to not eneough threads to keep the plugs tight. We proactively sold plug changes and still do under this pretense and found several more factory plugs that were not tight. We have never had a replaced plug get blowen out only factory installed plugs. The replacement motorcraft plug has more threads on it(I don't know if this helps since the head still only has 3) and is also made from a different alloy I am not sure if it is nickel or not but know it appears different and is non-magnetic.

Hope this info helps but it is just MY experiences and I am sure some where someone has blowen out a replacement or a newer than 01 plug.IMO if you are over 60k change your plugs and don't worry about it.

How is the new F450 holding up?

[spooner]

How is the new F450 holding up?

If you are refering to the new diesel (6.4l) it is doing much better than the
6.0l, which is not hard to do

The new emission is gonna have some problems for all of the big 3. I do Dodge too and am seeing a few issues with new cummins but it completely isolated to the new emission equipment that was required this year. I expect similar problems from Ford eventually. As expected fuel econ. is down too.
My 06 5.9 cummins ram reqularly hits 16 or more towing@60-65mph, new cummins towing 6k getting 10-11mpg.

[anhaney]

Anhaney
If I install new plugs in my Expeditions, would that help me to prevent this issue?
If so what plugs would you recommend?

Yes it will because the problem I am referring to it the CHEAP A$$ MOTORCRAFT plugs. The insulator comes out of the plugs leaving the shell behind. It is not a cylinder head issue as much as it is a spark plug issue. MOTORCRAP plugs are build by Autolite and Autolite plugs are an inferior product compared to Champion and NGK. I will get you guys all the break downs of the plugs if you want and start a spark plug thread but it will have to be next week. Autolite/MOTORCRAP is scary stuff when you see the inner construction.

[anhaney]

no. the problem stems from the threads in the cylinder head stripping out, due to the load placed on them by the compression in the cylinder. That is, unless the piston itself is impacting the cylinder(s) and pushing the plug out.

I would like to see something documenting that. HAHA that is funny. You may be right in some way on this but if the SPARK PLUG was built right you would not have this problem. If the threads were rolled instead of cut. And if the insulator was installed in a proper manner that plug would have no issues.

[spharis]

I'll agree. Compression is high enough in any engine to blow out a plug. If the plug isn't built correctly, and the plug is a short thread bore, IE threads not strong enough and not enough of them, they will shear and out goes the plug. I have always used NGK, and they come pregapped for GM in 99% of the applications.

[TeamAllen]

I'm with Spharis. All NGK!
Anhaney - Champion has had it's ups and downs. It's good to hear you recommend them.

[anhaney]

I'm with Spharis. All NGK!
Anhaney - Champion has had it's ups and downs. It's good to hear you recommend them.

They have had more than there ups and downs. All of that was under the old Cooper Corporation management and engineering team.

Federal Mogul merged the spark plug division with it OE engine design and manufacture division and they had over 9000 catalog changes in 4 years and since the inception of the Champion Plug from Cooper Automotive they have had 12,000 in eight years. So yes I am confident they have fixed the line and they have the best engineers in the industry to design the plugs for the engines since they design the engines for Ford, GM, Chrysler, Ect. Ect. then they sell the rights to the OE to license the engines as there design. They have done this for years. Those same engineers design the plugs also.

[whitlock87]

sorry for the slow response
.

thanks for the info