Hey i'm new here, I'm looking at buying a 99 4.6L F-150, but after reading all the different things about the spark plugs i'm a little worried. I have been doing some reseach, and i seem to come up with two different torque numbers, many posts i read says use anti-sieze torque to 12ftlb,but i did some reading on www.blownoutsparkplug.com, And they say not use any anti-size and torque the plugs to 28-30 ftlbs. Please help

 

The experts that deal with the blowout problem say to use the 28 lbs, no anti-sieze.

 

Ok but do they after they done the inserts, or on stock plug holes?

 

stock

 

As i recall, they have a forum on their site where they discuss it. Either that or a question and answer section.

 

Alrite so what should i do then ? fallow the instructions on www.blownoutsparkplug.com or torque to 12ftlbs and check them monthly.

 

Your a funny guy lol, - or the ladder. I'll Copy + Paste this from their site, just in case. -

Q: Why do you prefer 28-32 foot lbs torque instead of the factory specification?

A: Over the past few years we have heard from many of our customers that they tightened their plugs to the correct torque but they still came loose. We worked with 10 other Ford Certified Master Mechanics and concluded that 28 foot lbs of torque would be satisfactory. We have been using 28 foot lbs of torque for many years and have never had one come loose or strip out. To verify that we would not damage the original threads we used a test cylinder head with good factory threads we applied over 100 foot lbs of torque to the spark plug without any failure.

Q: Do you use Anti-Seize when you install new spark plugs?

A: No, we always use Motorcraft nickel plated spark plugs to stop any issues with electrolysis.

 

So is this what all you buys have done ?

 

No, it is what some of the guys have done, following that advice from the professionals.

 

Ok, so what do YOU guys recommand i do ?

 

The recommendations have been made abundantly clear..

 

Ok now i get it, lol brain fart ok thanks

 

NEVER and issue here using nickel anti seize and setting at 28 ft lbs, on 12 + plug changes

 

I use the best nickel anti-seize I can find on EVERY steel (plated or not) to aluminum interface... period.

And I use right at 25 ft-lbs of torque. Actually, I do it by feel mostly. The torque wrench is just there to make sure I don't go to far.

Never a blow out, never a problem going in or coming out.

2004 F150 Heritage 4.6L

 

That's because you have 8 thread heads, not 4 thread heads. Motorcraft plugs already have nickel plated threads so antiseize is not necessary.

By the way, do you realize that this thread has been dead for 10 years?