• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

i just sprayed for the first time after the headswap, all i can say is HOLY CRAP!!!

  • Thread starter Thread starter 96mustang_james
  • Start date Start date Mar 4, 2004

96mustang_james

Member
May 20, 2003
199
1
17
47
atoka oklahoma
Mar 4, 2004
#1
  • Mar 4, 2004
  • #1
i have been waiting for this moment for a long time and i can definately say that it has been well worth it, this is the first time that i have sprayed since i done the headswap and put the longtubes and prochamber on!
the car is an animal on spray, i can now rape the tires going into 4th gear, however, now my car is idling weird, it is ideling at around 1000rpm and jumping like i have a bad spark plug wire or something, could the plugs be shot already after one bottle? i just put the plugs in there 4 days ago and i just sprayed through about 3/4 bottle about an hour ago. the plugs are autolite 103's gapped at 34, and my timming was at 10 on my steeda timing adjuster.
btw, the car pulls like hell until it reaches about 5400rpm's and then it seemed like it was flooding or something, my bottle pressure was around 850-900psi.

any comments or suggestions would be appriciated!
 
R

Red2000GT

Founding Member
Sep 10, 2000
2,450
0
46
Regina,Sask.Canada
Mar 4, 2004
#2
  • Mar 4, 2004
  • #2
Everything sounds good but you're running out of pressure on the top end. I'd bet on a vaccuum leak,causing a rich condition. Does it happen even when not using the nitrous?
 

robg860

New Member
Mar 2, 2004
117
0
0
Mar 4, 2004
#3
  • Mar 4, 2004
  • #3
help

Red2000GT said:
Everything sounds good but you're running out of pressure on the top end. I'd bet on a vaccuum leak,causing a rich condition. Does it happen even when not using the nitrous?
Click to expand...

I lost my icon for "New Thread" so I cant ask anything....what happened??
 

96mustang_james

Member
May 20, 2003
199
1
17
47
atoka oklahoma
Mar 5, 2004
#4
  • Mar 5, 2004
  • #4
no, when im not using the nitrous this thing pulls all of the way to 6000rpm with no problems.

does anyone have any ideas on the weird ideling?
 
2

2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
www.dirtydirtyracing.com
Mar 5, 2004
#5
  • Mar 5, 2004
  • #5
I would check the plugs , with your compression , unless you took out some material from the combustion chamber of the head , you are running way too much compression for that much timing and spraying it , i would drop back to 6 degrees for that much juice and change the plugs , should be fine after that , probably melted one of the plugs while spraying is what your idle problem is
 

mrvax

Stay thirsty my friends
Founding Member
Nov 29, 1999
5,225
3
79
SN Moderator: Orlando, Fl.
Mar 5, 2004
#6
  • Mar 5, 2004
  • #6
2002BLGT said:
I would check the plugs , with your compression , unless you took out some material from the combustion chamber of the head , you are running way too much compression for that much timing and spraying it , i would drop back to 6 degrees for that much juice and change the plugs , should be fine after that , probably melted one of the plugs while spraying is what your idle problem is
Click to expand...




Agreed.
 
2

2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
www.dirtydirtyracing.com
Mar 5, 2004
#7
  • Mar 5, 2004
  • #7
i know i have a blower , but believe me ive got alot of friends that use the jug ,especially the 5.0 guys around here , i know what timing and compression can do to a spark plug , and head gaskets , and pistons , just keep it safe and you will be fine , back that timing off , might even take it down to 4 degrees .
 

96mustang_james

Member
May 20, 2003
199
1
17
47
atoka oklahoma
Mar 5, 2004
#8
  • Mar 5, 2004
  • #8
well, i just pulled out the plugs at lunch time and all of them still look brand new, but, the #1 cylinder plug (the one on the passenger side closest to the front of the car) was wet on the threads but that could just be because it rain yesterday afternoon, but it did feel kinda like oil. could that be something bad?
as far as the ideling problem, i backed off the set screw and it now idels perfect?
 
2

2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
www.dirtydirtyracing.com
Mar 5, 2004
#9
  • Mar 5, 2004
  • #9
96mustang_james said:
well, i just pulled out the plugs at lunch time and all of them still look brand new, but, the #1 cylinder plug (the one on the passenger side closest to the front of the car) was wet on the threads but that could just be because it rain yesterday afternoon, but it did feel kinda like oil. could that be something bad?
as far as the ideling problem, i backed off the set screw and it now idels perfect?
Click to expand...


the bottom rings on the non forged pistons are common things to give way under pressure , so keep your fingers crossed , might wanna check the compression on all your cylinders to make sure they are even
 

96mustang_james

Member
May 20, 2003
199
1
17
47
atoka oklahoma
Mar 5, 2004
#10
  • Mar 5, 2004
  • #10
the plug was wet on the threads, not the ground strap electrode or the porceline, they all looked fine, but that plug was pretty loose in the hole when i went to take it out so i dont know??? the car is running and idling fine now as far as i can tell.

wouldnt the car miss really bad if you messed up a piston or a ring???
 

mrvax

Stay thirsty my friends
Founding Member
Nov 29, 1999
5,225
3
79
SN Moderator: Orlando, Fl.
Mar 5, 2004
#11
  • Mar 5, 2004
  • #11
96mustang_james said:
the plug was wet on the threads, not the ground strap electrode or the porceline, they all looked fine, but that plug was pretty loose in the hole when i went to take it out so i dont know??? the car is running and idling fine now as far as i can tell.

wouldnt the car miss really bad if you messed up a piston or a ring???
Click to expand...


Yes, it would, and you would be blowing smoke out the exhaust. You are probably A-OK.
 
E

el_kid_1

New Member
Oct 30, 2003
738
0
0
50
Puerto Rico
www.cardomain.com
Mar 5, 2004
#12
  • Mar 5, 2004
  • #12
I would scan the ECC to see if there is any miss fire. It is possible that you fried a ring.
 
You must log in or register to reply here.

Similar threads

T
First Car, what should I do for power??
  • tunedV6
  • Apr 13, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
7
Views
282
1996 - 2004 SN95 Mustang -General/Talk- May 4, 2026
580HP*428Cj
5
B
'03 GT Fuel Pump/Pressure/Delivery Issue
  • Brodach
  • Oct 21, 2025
  • SN95 4.6L Mustang Tech
Replies
8
Views
929
SN95 4.6L Mustang Tech Oct 31, 2025
gkomo
Place to Avoid: Jamison Auto Group in Gulfport, MS
  • D Durden
  • Oct 20, 2025
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • 2 3
Replies
46
Views
3K
1965 - 1973 Classic Mustangs -General/Talk- Jul 16, 2026
Noobz347
M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
530
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
A
Fox Planning on building my foxbody and was wondering if I can get any tips or anything to watch out for!
  • Angelq1028
  • Oct 31, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2 3 4
Replies
76
Views
5K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 29, 2025
Robman8028
R
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?