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Engine Spark Plug Gap

  • Thread starter Thread starter RangerJoe
  • Start date Start date Dec 6, 2013

RangerJoe

I leave the horn on while driving
15 Year Member
Apr 26, 2010
2,560
1,146
184
Georgia
Dec 6, 2013
#1
  • Dec 6, 2013
  • #1
Not Mustang related, but it is a Ford. Wife's 2007 Ford Edge, 112,000 miles. She comes home and tells me trans is slipping. I drive it, feels like its missing, not trans (have had some minor problem with trans). Have been putting off tune up. Today I ordered 6 new coils ($500+). Tonight I pulled the old coils and plugs. Ford recommends .054" gap for new plugs. The old ones measured .075-.085. I can't see any outward visible signs on the coils that would indicate they were burned or anything. BTW, checked codes with scanner and it was clean.

So, the question is: Is .030" wear pretty excessive? Would that be enough to cause a miss? New plugs and coils will be going in tomorrow when they arrive at parts store. I pray to God that this fixes it. Not stressing too much about cost, because it was past time. Just don't want to be scratching my head if it doesn't fix it.

Joe
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,235
17,920
224
Massachusetts
Dec 7, 2013
#2
  • Dec 7, 2013
  • #2
That's a pretty big gap. I could see the spark having trouble jumping that.

I think if a COP was bad, you would get a code. More than likely I would guess the issue is the plugs only. That would be my starting point
 

RangerJoe

I leave the horn on while driving
15 Year Member
Apr 26, 2010
2,560
1,146
184
Georgia
Dec 7, 2013
#3
  • Dec 7, 2013
  • #3
Hoping so. We will see. Going to replace both though, just to avoid future headaches. Upper intake had to come off to get rear coil and plugs.

Joe
 

RangerJoe

I leave the horn on while driving
15 Year Member
Apr 26, 2010
2,560
1,146
184
Georgia
Dec 7, 2013
#4
  • Dec 7, 2013
  • #4
Well, 6 new plugs, 6 new coils, and $535 later, she runs like a top!

Joe
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
7,387
2,745
194
Kearney, NE
Dec 14, 2013
#5
  • Dec 14, 2013
  • #5
Congrats!
That was a big gap. Doesn't the Edge have OBD II? I am surprised the misfire did not register a code. It did on the families Bravada, even which cylinder, and that was before you could tell from the driver's seat.
 

84Ttop

They make new pistons every day, so why worry?
5 Year Member
Jul 2, 2009
5,222
3,254
204
South Jersey
Dec 14, 2013
#6
  • Dec 14, 2013
  • #6
Good to hear all is good. That gap was silly. The .054 I'm sure is much happier lol
 
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