spark plugs 03 gt

1

19Stangnotch87

New Member

Oct 12, 2005

74

0

0

idaho

May 13, 2008

#1

• May 13, 2008

• #1

i got my car with 53k and now has 67k and i dont think the previous owner changed the spark plugs. i think it might be time for some new ones how do i check the spark plugs? do i have to remove the fuel rails or what if someone could help me out i would appreciate it thanx again....also some part#s or any thing would help too

 

F

Fastwrx15

Banned

May 11, 2008

42

0

0

Woodstock,Illinois

May 13, 2008

#2

• May 13, 2008

• #2

Motorcraft or Autolite spark plugs are the best choice for
your Ford Mustang.
Personaly I would just change them if you have 67K on your ticker.

 

the98stang

Active Member

Aug 12, 2005

2,408

0

47

Clovis, CA

May 13, 2008

#3

• May 13, 2008

• #3

Your better off leaving them alone if your car runs fine. Too many people ruin their cars when trying to replace the spark plugs. The heads can be easily stripped and most people won't torque them right. Then they wonder why they get a blown spark plug . If it runs fine, leave them alone.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,243

17,924

224

Massachusetts

May 13, 2008

#4

• May 13, 2008

• #4

At 67K miles, i think i would change the plugs.

I have 60K on my GT and just now starting to notice a small split second miss when i go WOT.


Stock plugs are Motorcraft SP-493's gapped at 0.054"

 

crzyhrse99

Active Member

Mar 30, 2005

259

3

28

Kansas

May 14, 2008

#5

• May 14, 2008

• #5

http://www.bullittarchive.com/1017.htm for help with the change.

 

1

19Stangnotch87

New Member

Oct 12, 2005

74

0

0

idaho

Oct 24, 2008

#6

• Oct 24, 2008

• #6

how about the ngks are those any good

 

bhuff30

Founding Member

Dec 11, 2001

6,037

35

129

Olathe KS

Oct 24, 2008

#7

• Oct 24, 2008

• #7

It's certainly no problem to change the plugs. Just don't be a dumb-ass and overtorque your plugs. Check the spec and try to follow it. Also, don't try to remove the plugs on a hot engine because that can damage the threads too.

You should only have to remove the air intake tube (from the air box to the throttle body). Then, you can access all the plugs with various extensions.

Personally, I just use motorcraft plugs from the Ford dealer. You know the car will like them and they will last a long time. I last changed the plugs at 80k miles and have 155k now. Thats 75k miles and I haven't noticed any misses yet. I can still get 26 mpg on the highway too.

 

D

Dragstr05

New Member

Dec 21, 2004

643

1

0

Stafford VA

Oct 24, 2008

#8

• Oct 24, 2008

• #8

the98stang said:

Your better off leaving them alone if your car runs fine. Too many people ruin their cars when trying to replace the spark plugs. The heads can be easily stripped and most people won't torque them right. Then they wonder why they get a blown spark plug . If it runs fine, leave them alone.

Click to expand...

+1

The factory plugs are rated for 100k. I replaced mine at 90k; the stock ones were perfectly fine and it made no difference.

 

Stark77

Member

Jun 11, 2008

501

0

16

Tallahassee, FL

Oct 24, 2008

#9

• Oct 24, 2008

• #9

My city mileage dropped from 18-19 down to 15, time for a plug change tomorrow morning, picked up the Autolites.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,243

17,924

224

Massachusetts

Oct 24, 2008

#10

• Oct 24, 2008

• #10

67K miles and still going.

I'll change em in the spring. it's too cold now

 

evil281

New Member

Jan 6, 2008

276

0

0

Arizona

Oct 24, 2008

#11

• Oct 24, 2008

• #11

78,000 and still goin just great

 

Winters98GT

Whoop...whoop-whoop-whoop-whoop...GANGNAM STYLE!!!

Founding Member

Nov 29, 1999

5,520

1,291

224

H Town

Oct 24, 2008

#12

• Oct 24, 2008

• #12

the98stang said:

Your better off leaving them alone if your car runs fine. Too many people ruin their cars when trying to replace the spark plugs. The heads can be easily stripped and most people won't torque them right. Then they wonder why they get a blown spark plug . If it runs fine, leave them alone.

Click to expand...

+1.

no need if the car is running fine. If you don't know how to remove the spark plugs, ask a friend to do it and watch them.

 

russell16

Member

Sep 7, 2008

32

1

7

Lubbock, Texas

Oct 25, 2008

#13

• Oct 25, 2008

• #13

i had a miss fire in one of my cylinders, my car had over 71000 so i just decided to change them all. I never saw anyone else do it, just used how to's from different forums. Its nice to have some different sized extensions, at least a 9". just follow the directions and dont over torque them. Ive put probably 100-200 miles since i did mine. after i did it the check engine light went away and havent had a problem. You could go to autozone or where ever and they should be able to tell you the exact spark plug that came stock, i would just use the same. its what i did. i believe they are motorcraft platinum. You will hear a lot of people say to go with copper, i just decided to go with stock platinum because they should last longer than the copper ones.

 

D

DKVL

New Member

Oct 12, 2008

113

0

0

Oct 25, 2008

#14

• Oct 25, 2008

• #14

I dont mean to hijack the thread, but how do you know when your spark plug is misfiring?

 

Stark77

Member

Jun 11, 2008

501

0

16

Tallahassee, FL

Oct 25, 2008

#15

• Oct 25, 2008

• #15

P030* , * would be the cylinder number, that's the code it throws, or check engine/service engine soon light

 

IIGood

Founding Member

Aug 1, 1998

4,252

1,214

224

Churchton, MD

Oct 25, 2008

#16

• Oct 25, 2008

• #16

Coming up on 92K miles on the factory plugs on my '03...still running strong.

 

westgastang5.0Coyote

15 Year Member

Sep 24, 2008

192

3

18

Temple,Ga

Oct 25, 2008

#17

• Oct 25, 2008

• #17

hv

 

SVT32VDOHC

waiting for the next hack atta

Founding Member

Nov 22, 2001

3,501

28

119

Motor City

Oct 25, 2008

#18

• Oct 25, 2008

• #18

Leave it alone. You don't want one blowing out on you later on down the road. This sucks when it happens.

 

Stark77

Member

Jun 11, 2008

501

0

16

Tallahassee, FL

Oct 25, 2008

#19

• Oct 25, 2008

• #19

Swapped out 4 (driver side first) before it got dark. A screw, very small from the bottom of a nitrous solenoid, was hiding behind a COP and fell into the spark plug socket. Thankfully, Autozone had a telescoping magnetic pin(reaches goes from size of pin to about 2 feet long) and it pulled the screw out no prob. Other than that, it was uneventful. Motorcraft OEM plugs (but not the short threads, techs at dealer said they use them), anti seized and dielectric grease on the connection stud. Torqued to 13/14 ft, lbs. Let car run for a bit to make sure no issues. 4 more in the morning.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,243

17,924

224

Massachusetts

Oct 25, 2008

#20

• Oct 25, 2008

• #20

DKVL said:

I dont mean to hijack the thread, but how do you know when your spark plug is misfiring?

Click to expand...

Find a hill and drive up it in a higher gear than you should be. The car will feel like it's sputtering or missing.

It could be other things...but that's usually sign it's time to check and change the plugs