Yeah, that's what I have heard. I've heard that it has caused some misfires. I might give it a look myself.

 

I bought my truck at around 11k and it has around 37 almost 38k.

 

I'm pretty sure torque is set for 12lbs for the 5.0. Don't use anti seize it'll throw torque specs way off. Check the gap on the new plugs and use a little engine oil, just a super fine coat on the threads and your good to go.

 

P.s. Timing tensioner problems usually have more of s valve clatter type sound, not like detonation. Listen to YouTube videos...type in tensioner noise.

 

What was the spec on the Eco engine as far as gap for plugs? I just pulled one plug real quick I know I have to do them all but it was .060. That's huge

 

I might need to check mine. The motorcraft plugs are actually good plugs. I'll probably just recap and go.

 

I believe it's 0.034 but people have had luck going down to 0.030 with "tunes".

 

Eco is .030- .032

 

Who's guys update here. All my plugs but one were were at .060 and the one was.055. So I went to .045 and took her out for a 30 minute ride up hills down hills got on it lugged it and I couldn't get it to ping at all. Now with them being so far out could that also have a bad effect how the engine runs? I wonder if some mpgs will return.? I know it sounds weird but seemed like it had a little more pep back.

 

That's good to hear man. This weekend I am going to check my plugs for gapping. It might be, it seems that the problems people have been experiencing haven't been catastrophic (thank god). They have just had the engine lug or ping at certain RPMs. Thanks for the heads up.