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  • 1996 - 2004 SN95 Mustang -General/Talk-

Changed the spark plugs...WOW!!!!

  • Thread starter Thread starter juiced_94gt
  • Start date Start date Aug 25, 2007

juiced_94gt

Active Member
Mar 30, 2005
1,143
0
36
Southern California
Aug 25, 2007
#1
  • Aug 25, 2007
  • #1
Well i bought this 02 GT last year at a ford dealership with 42k for 16k well i thought it was smooth, today i changed the plugs and noticed that they were autolite platinums so obviously someone had changed them before, then i pull the last one out and there is oil all over it after the threads so i think it's been fouled up the whole time, wel i started it up and WOW, it's so silky smooth now that i cant even believe it
 

juiced_94gt

Active Member
Mar 30, 2005
1,143
0
36
Southern California
Aug 25, 2007
#2
  • Aug 25, 2007
  • #2
Oh i used autolite 764's gapped at .54
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
4
39
UCSD/La Jolla
Aug 25, 2007
#3
  • Aug 25, 2007
  • #3
sweet, changing out my SPW's and plugs made a big difference here. Mainly i thin because of the gapping
 

Tally_4.6

Member
Feb 26, 2006
195
0
17
Orlando
Aug 25, 2007
#4
  • Aug 25, 2007
  • #4
I have 2 boxes of brand new 764's in my tool box. But i'm a little scared to put them in 'cause of how much shorter the threads are then the motorcraft platinums which are already in engine.
 
0

03redgtstang

Banned
Apr 24, 2007
105
0
0
Aug 25, 2007
#5
  • Aug 25, 2007
  • #5
you paid 16k last year for an 02 gt with 42k miles? That is PRICEY. I bought my 03 gt with 47k miles for 11.9k in Feb.
 

Crzyhrse

Active Member
Dec 23, 2004
0
2
38
Seattle, WA
Aug 25, 2007
#6
  • Aug 25, 2007
  • #6
03redgtstang said:
you paid 16k last year for an 02 gt with 42k miles? That is PRICEY. I bought my 03 gt with 47k miles for 11.9k in Feb.
Click to expand...

Same thing I was thinking.
 

the98stang

Active Member
Aug 12, 2005
2,408
0
47
Clovis, CA
Aug 26, 2007
#7
  • Aug 26, 2007
  • #7
juiced_94gt said:
then i pull the last one out and there is oil all over it after the threads
Click to expand...

Bad valve cover gasket or blow by
 
S

steve_stang2003

New Member
Apr 18, 2007
195
1
0
Aug 26, 2007
#8
  • Aug 26, 2007
  • #8
Tally_4.6 said:
I have 2 boxes of brand new 764's in my tool box. But i'm a little scared to put them in 'cause of how much shorter the threads are then the motorcraft platinums which are already in engine.
Click to expand...

Same story here!

I purchased a set, took a look at the thread length and brought them back.

I changed my plugs at 26k for the copper version of the stock platinum Motorcraft plugs for a 2003.
FWIW the factory plugs looked brand new so when the coppers where out, they are going back in.

For those that are curious, I changed the plugs because I am not the original owner (purcahsed at 16k miles) and I wanted to see how the motor was running. Since I had them out already I tossed in the copper to see if any difference.
None.

Ford changed the thread length at some point in production but it looks like Autolite didnt', at least on the plugs I bought.

Wonder if NGK are the same short threads?
Anyone know?
 
S

steve_stang2003

New Member
Apr 18, 2007
195
1
0
Aug 26, 2007
#9
  • Aug 26, 2007
  • #9
Crzyhrse said:
Same thing I was thinking.
Click to expand...

I paid $16k for a 2003 GT Convertible Centennial Edition last October from a dealer. Had 16k miles or so on it when I bought it. Car is mint and has every option including the Mach 1000 etc.
 

Mustang225

Founding Member
Jul 23, 2000
424
5
29
Aug 26, 2007
#10
  • Aug 26, 2007
  • #10
Ok, here's a loaded question.

I've never changed my plugs since bought new 8/02.

2003 at 74,000 miles. Never been hard on her (even from a dead stop). 90%+ highway miles.

If the car is running fine, tell me why I should change them?
(I'm willing to, but just feel if it ain't broke...).
 

stangdrvr06

New Member
May 17, 2006
42
0
0
Aug 26, 2007
#11
  • Aug 26, 2007
  • #11
dang u paid alot i paid 13k for an 02 gt with 21k on the odo. In perfect condition. Dad drove a hard bargain lol.
 

juiced_94gt

Active Member
Mar 30, 2005
1,143
0
36
Southern California
Aug 27, 2007
#12
  • Aug 27, 2007
  • #12
Yeah i kow i paid alot...when i needed the car there was some sort of shortage of mustang GT's in california LOL well i got the car i wanted in the color i wanted in perfect condition so he price was the last thing i was looking at.
 
G

GettinThere

Member
Jul 29, 2005
553
1
19
Central Texas
Aug 27, 2007
#13
  • Aug 27, 2007
  • #13
Mustang225 said:
Ok, here's a loaded question.

I've never changed my plugs since bought new 8/02.

2003 at 74,000 miles. Never been hard on her (even from a dead stop). 90%+ highway miles.

If the car is running fine, tell me why I should change them?
(I'm willing to, but just feel if it ain't broke...).
Click to expand...

Based on what you said, you probably don't need to. The factory platinum plugs are not due to be replaced until 100k miles. But one way to think about it is, your plugs are 3/4 used up, and you might notice an improvement after replacing them.
 

whyask

New Member
Apr 4, 2005
735
1
0
Sacramento
Aug 27, 2007
#14
  • Aug 27, 2007
  • #14
while your at it change the belt too....
 
E

emagdnim

Active Member
Feb 5, 2003
391
15
28
Aug 27, 2007
#15
  • Aug 27, 2007
  • #15
juiced_94gt said:
Yeah i kow i paid alot...when i needed the car there was some sort of shortage of mustang GT's in california LOL well i got the car i wanted in the color i wanted in perfect condition so he price was the last thing i was looking at.
Click to expand...

Same thing happened to me I bought an 01GT with 20k miles for 18k. There was nothing cheaper available in my area and I needed a car bad so I bit the bullet. I am happy with my purchase.
 

BurningRubber

10 Year Member
Dec 6, 2004
1,865
24
58
Aug 27, 2007
#16
  • Aug 27, 2007
  • #16
My plugs looked like crap when I pulled them. I beleive they were origional. They were plats, and looked old. Gap was opened up and they were lean looking.

Didnt notice too much of a difference with new plugs, cause my COP's were on their way out anyway, and still are. Damn them.
 

Matt's 03 GT

Member
Aug 28, 2006
0
0
17
Orange County
Aug 29, 2007
#17
  • Aug 29, 2007
  • #17
Prices are high in So'Cal for everything!!!
 

whyask

New Member
Apr 4, 2005
735
1
0
Sacramento
Aug 29, 2007
#18
  • Aug 29, 2007
  • #18
EVERYTHING in CALI is F***N insane ! $$$$$ being a car modder in cali is damn near impossible sometimes !
 

CobraRed_96_GT

Active Member
May 20, 2006
1,421
4
39
UCSD/La Jolla
Aug 29, 2007
#19
  • Aug 29, 2007
  • #19
werd
 

Mustang225

Founding Member
Jul 23, 2000
424
5
29
Aug 29, 2007
#20
  • Aug 29, 2007
  • #20
Mustang225 said:
Ok, here's a loaded question.

I've never changed my plugs since bought new 8/02.

2003 at 74,000 miles. Never been hard on her (even from a dead stop). 90%+ highway miles.

If the car is running fine, tell me why I should change them?
(I'm willing to, but just feel if it ain't broke...).
Click to expand...

Spoke with my mechanic today who I trust completely.

He said 100,000 miles since I baby the car.
 
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