I recently changed my spark plugs on my truck. None of them broke. My dad helped me do it (35 years of random mechanic experience, he was intrigued with the COP, he has never owned a Ford after 1990). We didn't put any anti-seize on the threads. We put in Motorcraft spark plugs. My question is will it cause problems in the future?

Edit: I'll be changing them in another 30,000 miles or so.

 

Your year does not have the breakage problem. Did you torque the plugs to 28 ft/lbs? No antisieze is correct.

 

Pops told me no anti seize would be the right way to go so I went with his instinct. His torque wrenches were in his work truck at his shop (Electrician by trade) We just tightened it, not to tight but not to loose. Anywhere around 20-30lbs. The only problem we had was the 3rd COP back on the driver's side the 7mm bolt was freaking stripped! Good thing ol' dad had a socket extraction set I'll have no problems when I go to change them next time you're saying?

 

if you used motorcraft plugs or a plug that has nickel content you'll be fine.

 

No need for that. If they were torqued correctly, 100k should be your next change.

 

You think? As far as I know they had never been changed in my truck (3rd owner) and I got it at 80k. When I did the plug change they were really 'rusty' you could say. I can only imagine how that would damper my fuel efficiency and performance if I waited that long.

Edit: I also noticed a immediate gain in power and smoothness of the engine after I changed them.

 

ford recommends 100k plug changes. If you wanta do it more then that good. 30k is a bit soon I'd say though. I'd go at least 60.

 

I'd definitely check them @ 30,000,- without a tune. With your mods your probably running a little lean. Just a little lean can shorten plug life, quite a bit.

With my mods it has, - not to a point that it hurts the engine, -it does effect the plugs tho. I'm running leaner than you are right now with Long Tubes. Long tubes net you more Horsepower and Torque (aprox, 30/35) over shorts.

So without getting tuned or dialed in, we are lean man. Only a dyno, then custom tune will fix that.

BTW - I went with Iridium's (Fine wires) about 12,000 miles ago. So far so good.