Ford Mustang Forum banner

spark plugs

  1. 2008 4.6L GT Engine Hesitation

    2005-2010 Mustang GT Tech
    Why is my car feeling hesitant at times? I am hoping someone here has had similar issues, and can weigh in on this. Just a quick run through of all the mods I have: 1. Pypes Axle Back Bomb Exhaust 2. Ford Performance 3.73 rear end 3. Ford Performance Traction-LOK Limited Slip Differential w/...
  2. Spark Plugs & Throttle Body really dirty! 80k miles

    2011 - 2014 V6 Mustang Tech
    I bought my 2012 Mustang last March it runs and idles great. Recently I removed factory throttle body and cleaned it with TB cleaner. It looked pretty dirty to me! I changed the spark plugs too, and they seemed really bad too! There was quite a bit of oil residue on the intake manifold too, you...
  3. Stock 2002 3.8L V6 Mustang Code P0171 after Spark Plug change. Daily Driver!

    V6 Tech
    Hey guys, need a little help/advice figuring out what the most likely cause of the P0171 code being thrown at me post spark plug change. I did the change with stock heat rating plugs and idle/throttle response are much improved. Here's my rundown of thoughts on the issue: 1: I didn't have this...
  4. Mysterious Misfire in 2005 V6 Automatic

    2005-2010 V6 Mustang Tech
    Hey there, everyone. I've been stalking the forum for a while trying to find someone else with my problem and a solution but no dice yet so I figured I'd better go ahead and sign up so I could describe my issue. Anyway, I have an '05 V6 Automatic with no mods. After changing spark plugs, the...
  5. 2012 5.0 Spark plug and coil upgrade

    2011 - 2014 Mustang GT Tech
    Thinking of getting either the performance distributor or Accel coil kits from american muscle, if i do what spark plugs should or would be better to use? only mods are tune and JLT cold air intake but may upgrade to boss manifold this year
  6. Coyote/Roadrunner V8 Spark Plug replacement cost

    2011 - 2014 Mustang GT Tech
    I'm just curious if any fellow owners can offer input into the reasonable labor required in hours to replace a set of 8 spark plugs for a Coyote or Roadrunner motor. All helpful insight will be appreciated.
  7. 2007 Mustang GT Spark Plugs

    2005-2010 Mustang GT Tech
    I have replaced spark plugs on my 2006 Mustang, and 3 of them broke, so I know how the 4.6 3v nightmare goes. I'm about to change the plugs in my 2007 Mustang GT, but I'm stuck between Brisk and Champion. They're both one piece plugs, but I keep hearing that the Brisk is designed for racing and...
  8. Need Help - Installing New Spark Plugs and Wires

    Classic Tech
    Hi Everyone, I'm changing out the spark plugs on my '66 Coupe. It's a very stock 289, 2 barrel, with a/c, power steering, and the T/E components still on it. I used Autolite 45s... but, I couldn't get the very last plug out!! I just can't seem to get enough clearance to unscrew it. I'm not sure...
  9. What new spark plugs do I get

    V6 Tech
    Hey guys I have a 1999 v6 and I'm lookin to change the spark plugs wires and coul pack but I don't know which are the best for this car I've heard many things like ngk are bad for a mustang and to stay with a copper core but I have never done spark plugs before so all your help would be great...
  10. Wires, spark plugs, and coils

    2005-2010 Mustang Talk
    I have a 2006 4.0L V6 automatic and I am looking at coils wires and spark plugs. Are the performance gains worth the extra money between $35 Taylor Street Thunder 8mm Spark Plug Wires and $110 Performance Distributors Livewires 10mm Spark Plug wires? Are the performance gains worth the extra...
  11. Problems after changing spark plugs?

    5.0L Tech
    I got new plugs for my 1985 mustang 5.0 and changed them out. now that i have the car makes a popping sound kinda when i go to accelerate and backfires like crazy when i half throttle or more. when it starts making the popping noise it starts to lag. its not a constant lag only when it makes the...
  12. How to start an engine that hasn't been started in 20 years. 1966 Mustang

    Classic Tech
    Hey i have a question for all of you about starting up my 66 mustang 289. It hasn't been started in about 20 years and want to make sure I'm going about this procedure correctly. recently I've started a 77 dodge pickup that hasn't been started in about 20 years again and we changed spark...
  13. Popping Noise Right After Changing Spark Plugs??

    I just changed my spark plugs on my v6 2002 mustang. So when i now start it and then take off i hear this popping noise. It only happens when i take off. Can so one help me out with this problem. S
  14. Spark Plugs, to change or not to change? Bonus question included!

    2005-2010 Mustang Talk
    So there's this, I've had a set of champion 7989's lying around for a year, still packed as they were bought. My baby is now at about 59,000 miles (2007 gt/cs). Should I change out the stock ones or just roll with it? I had read about stock ones breaking being a two-piece (and thus bought...
  15. Please help, Changed spark plugs in 2006 GT, now it's running rough!

    2005-2010 Mustang GT Tech
    My 2006 GT just hit 70k miles so I decided it would be a good time for a tune up... I did my research here about the plugs breaking and whatnot before attempting to change them. Well even after going slow and using the PB Blaster (2 hour soak), 4 out of the 8 broke. Batting .500 :heha: But I...
  16. Misfire after changing sparks plugs.

    V6 Tech
    Hi Guys, Yesterday, I decided to change spark plugs on my 2002 v6. I started it from plug 1 to Plug 6. But I could not take 1-4-5-6 out. So I just replaced plugs 2 and 3. After that when I started my car, It was misfiring (But no code). My friend said there was some smoke from plug area 1-2-3...
  17. 2010 Replacement Spark Plugs

    2005-2010 Mustang GT Tech
    Hey Guys, What are some of the replacement brand spark plugs being used on the '10 GT? The only ones that I have found so far are the NGK Iridium, NGK Laser Dbl Plat, and NGK GP Platinum.
  18. oem spark plugs on 2000 v6 mustang

    V6 Tech
    Hi, I just wanted to know if someone ever run into the situation where \oem spark plugs where not motorcraft brand. I just replaced all six plugs in my car that has 100k and was beginning to run rough at times (no codes) and notice it had original cables. but to my surprise the plugs where...
  19. What spark Plugs? Edelbrock victor jr 347

    5.0L Tech
    I have a 347 stroked 11:1 comPression with victor jr heads, it's a drag car what spark plugs should I run in it? I know they have to be 14mm x .75 reach but what exact plug? I really like NGK if anyone knows what heat range/part number I'd apPreciate it
  20. Cylinder misfiring ,1996 Mustang

    V6 Tech
    Hi, this is my first post on this website, just so you know. I own a 96 Mustang V6 auto with 207,000 miles. For 8 months, my check engine light has been going on and off. The first few times it was a "cylinder 2 to misfire" error. So I replaced the spark plugs. Then a "cylinder 4 to misfire"...