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Ford wanted 615 bucks to replace plugs...and good write up on how to do it yourself? Still not sure where the wires are in terms of inspecting for rubbing.
Here's a how-to kindly put up by one of our members:
http://ecoboostperformanceforum.com/index.php/topic,1980.0.html
There is a step by step illustrated writeup for the naturally aspirated 3.5L, don't know of one for the twin turbo. Worst comes to worst, if you find a mechanically inclined friend, perhaps you can do it together?
I have a 2011 SHO that I just purchased. At first all was great. Now It's gotten sluggish. After reading this post I thought this may have been my problem. Now I’m not so sure. Can anyone tell me if these are the wires I’m looking for? I don’t see any damage to them.


Thanks for the info. I don't see any wear or tear. I was hoping my problem would be an easy fix. Any suggestions on finding out what the knock sensors are reading? I'm ready to make an appointment with the dealership, but would like to narrow down what the issue is if I can.


