Eco spark plug gap
#31
Senior Member
Haven't checked my plugs yet.....overall I'm pretty happy with the way my truck runs, other than an occasional rough-ish idle.
I'm curious to see if there is will be any negative effects seen from going to the small side of the of the recommended gap. Generally speaking an improvement in mileage and performance can be seen by running the widest gap the your ignition system can support.
I'm curious to see if there is will be any negative effects seen from going to the small side of the of the recommended gap. Generally speaking an improvement in mileage and performance can be seen by running the widest gap the your ignition system can support.
#32
Member
I changed out my plugs this last weekend... All the OE plugs were 0.040 - 0.042. I changed to NGK Iridium IX LFR7AIX (one step colder) which all came gapped to 0.030. It's definitely smoother now...
#33
Senior Member
Just got done checking my plugs. All 6 were right at .030, I have not had any issues other than rough idle on cold starts for the first 20 seconds. My truck is a 2012 with 5,000 miles on it.
#35
Got 19mpg on my road trip to michigan. 600+lbs of cargo and 3 40 minute stops that I had to idle the whole time. Average speed 70mph. There was a stretch of construction where I reset the meter and averaged 26mpg for 30 miles at 55mph. Drafting a semi helped. Couldn't really get on it due to precious cargo (baby).
#37
2011 XLT XTR SCrew 4x4 EB
Originally Posted by C Rock Booster
Do you guys think that the plugs that come stock just have issues after you get more miles on them? Or did Ford change gaps between 2011-2012?
#38
i just purchased a new set of plugs from Ford and they all came set at .033ish. Its better than the .042ish the originals were.
Amazingly enough, ford only charged $33 for the whole set. I went in there thinking $10each and was pleasantly surprised!
Amazingly enough, ford only charged $33 for the whole set. I went in there thinking $10each and was pleasantly surprised!
#39
Originally Posted by yoshiz28
i just purchased a new set of plugs from Ford and they all came set at .033ish. Its better than the .042ish the originals were.
Amazingly enough, ford only charged $33 for the whole set. I went in there thinking $10each and was pleasantly surprised!
Amazingly enough, ford only charged $33 for the whole set. I went in there thinking $10each and was pleasantly surprised!