2010 6.8 V10
Postmaster
Joined: Jun 2008
Posts: 2,564
Likes: 11
From: Wayyy NoCal, USA
I'm going to answer yes and no....
Yes because the heads are still aluminum, and the spark plugs are still steel. Although Ford kept adding more and more threads to "idiot proof" them as much as possible, with enough ignorance and abuse, it IS still possible to cross thread, under torque, over torque, or leaving in for too long. Any of those errors can result in thread damage and failure. This is true of ANY engine using aluminum heads. I've seen BMW's with over an inch of threads on the plugs AND a compressible washer end up with stripped spark plugs after incompetant morons worked on them....
And no because I'm not convinced there ever was an issue other than improper installations. There are thousands and thousands of even the very early modular engines that have never had any spark plug issues.
But the latest (08+)are among the most idiot proof I've ever seen. I believe this engine is one of the most dependable and well designed high output truck engines EVER made!
Hopefully Ford will reverse its decision to now install only in F450+ models.
Yes because the heads are still aluminum, and the spark plugs are still steel. Although Ford kept adding more and more threads to "idiot proof" them as much as possible, with enough ignorance and abuse, it IS still possible to cross thread, under torque, over torque, or leaving in for too long. Any of those errors can result in thread damage and failure. This is true of ANY engine using aluminum heads. I've seen BMW's with over an inch of threads on the plugs AND a compressible washer end up with stripped spark plugs after incompetant morons worked on them....
And no because I'm not convinced there ever was an issue other than improper installations. There are thousands and thousands of even the very early modular engines that have never had any spark plug issues.
But the latest (08+)are among the most idiot proof I've ever seen. I believe this engine is one of the most dependable and well designed high output truck engines EVER made!
Hopefully Ford will reverse its decision to now install only in F450+ models.
Posting Guru
Joined: Apr 2007
Posts: 2,402
Likes: 3
Early '08 models had a 2 piece plug that was only used for a very short time, they were replaced with one piece plug and are very easy to replace. My truck is a '08 with a build date of 7-07 and I had the one piece plugs from the factory. I have since replaced mine at 55k and it took me a hour and a half.
Freshman User
Joined: Jan 2011
Posts: 26
Likes: 0
I had over 180000 km on my truck before the plugs were changed. I had them changed after I realized the original owner (first 174000 km) had not changed the plugs.
I had a local mechanic do the plugs for me as he works on a fair number of superdutys.
$425 taxes in for new oem plugs and an oil change. All plugs were worn down to the ceramic insulators. Going home I noticed improved mileage and performance. Hmm I wonder why??
I had a local mechanic do the plugs for me as he works on a fair number of superdutys.
$425 taxes in for new oem plugs and an oil change. All plugs were worn down to the ceramic insulators. Going home I noticed improved mileage and performance. Hmm I wonder why??
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