Changed my spark plugs-2012 Ecoboost
04-29-2014, 10:29 PM
#31
So I disconnected the battery and did a PCM reset. The idle smoothed out quite a bit. I am actually noticing better fuel economy already and I've been laying into the gas pedal a lot today--definitely feels like it has more get up and go to it without major delays. Will update after I get a few hundred kilometers on the truck......
Just disconnect the battery?
04-30-2014, 06:39 PM
#32
Senior Member
Thread Starter
05-01-2014, 08:15 PM
#33
Thanks, I asked above and haven't seen anyone answer - do you lose all your navigation sites and prior addresses stored? Is there a way to back these up if you do? I'd like to do this, but I can't lose all that stored stuff.
05-02-2014, 10:02 AM
#34
Honestly, it isn't necessary just from changing a set of spark plugs. Just drive it a couple hundred miles and it will adjust on its own.
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bk117wrench (05-02-2014)
05-02-2014, 11:54 AM
#35
Senior Member
I pulled my plugs in my '12 and there were 6 different gaps ranging from .035 to .045. I was not having any issues, I was just curious. I replaced with the NGKs all gapped to .030. I was getting pretty good mileage on the highway (19-22) and that hasn't changed, but my in-town mileage seems to have gotten a little better. I had the idling issue too, and I was really worried about it, but it has cleared itself up before I had a chance to look at it.
Do you recall the NGK P/N and where you bought them?
05-03-2014, 07:23 AM
#36
Just got here
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bk117wrench (05-03-2014)
06-08-2014, 11:14 AM
#38
Junior Member
Just finished replacing my spark plugs on my 2012 Ecoboost. Very easy to do, took about 40 minutes.
The gaps were all at 040" when I pulled them and they were the sp-534 plugs. Majority of them had quite of bit of carbon build up.
The new plugs were still sp-534, but out of the box they were all gapped at 030".
I took it for a quick test drive, it seems better. Only time will tell if I get improved fuel mileage. I got fed up with the minor engine shake when accelerating at highway speeds going up an incline.
Only thing I did notice is my tachometer needle seems to be jumping up and down quite a bit when it idles--this is with the engine completely warm. Eventually it settles down, but i`m wondering if the computer/engine is just getting adjusted to the new spark plugs---suggestions?
Another thing I'm still thinking of doing is removing the bottom peel and stick deflector on my intercooler. Dealer installed it when they did TSB 13-08-1 and did the PCM update. If I remove it, do I need the dealer to flash the PCM with a new or higher calibration...thanks!
The gaps were all at 040" when I pulled them and they were the sp-534 plugs. Majority of them had quite of bit of carbon build up.
The new plugs were still sp-534, but out of the box they were all gapped at 030".
I took it for a quick test drive, it seems better. Only time will tell if I get improved fuel mileage. I got fed up with the minor engine shake when accelerating at highway speeds going up an incline.
Only thing I did notice is my tachometer needle seems to be jumping up and down quite a bit when it idles--this is with the engine completely warm. Eventually it settles down, but i`m wondering if the computer/engine is just getting adjusted to the new spark plugs---suggestions?
Another thing I'm still thinking of doing is removing the bottom peel and stick deflector on my intercooler. Dealer installed it when they did TSB 13-08-1 and did the PCM update. If I remove it, do I need the dealer to flash the PCM with a new or higher calibration...thanks!
