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

smoke blowing out of exhaust???

  • Thread starter Thread starter Bundmar
  • Start date Start date May 5, 2008
B

Bundmar

Founding Member
Mar 22, 2002
377
0
0
Ontario, Canada
May 5, 2008
#1
  • May 5, 2008
  • #1
under full throttle or high rpms my car is blowing out blue smoke and it only does this everytime if my cars been sitting for a bit...it only does it the very first time i step on it and then can beat on the car as long as i dont shut it off and let it sit...could this be the valve seals???
 
B

BobHyatt

New Member
Aug 7, 2007
378
1
0
May 5, 2008
#2
  • May 5, 2008
  • #2
Bundmar said:
under full throttle or high rpms my car is blowing out blue smoke and it only does this everytime if my cars been sitting for a bit...it only does it the very first time i step on it and then can beat on the car as long as i dont shut it off and let it sit...could this be the valve seals???
Click to expand...

Sounds like you need new valve seals. Oil could be running down the valve stem when sitting, and it will make some blue smoke when you crank it up and get on it. Once that is burned away, the seals won't leak enough (the way they are made) to really smoke very much... They are reasonably easy to replace without removing the heads or cams...
 

oxfordgt

Member
Apr 30, 2006
288
2
18
Clarksville, TN
May 5, 2008
#3
  • May 5, 2008
  • #3
Thats what I thought was wrong with my car when i had the same symptoms. Nope seals were just fine but the rings were done. Do a compression check.
 

the98stang

Active Member
Aug 12, 2005
2,408
0
47
Clovis, CA
May 6, 2008
#4
  • May 6, 2008
  • #4
The 4.6 will burn a little oil. Do a compression check as others have said. It that checks out, don't worry about it.
 
You must log in or register to reply here.

Similar threads

J
Engine 4.6 Running rough at half throttle
  • jake411
  • Aug 3, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
174
SN95 4.6L Mustang Tech Aug 4, 2026
jake411
J
K
Engine 2000 Mustang GT - Fuel issue post-blown spark plug repair
  • kenster1092
  • Feb 26, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
446
SN95 4.6L Mustang Tech Mar 10, 2026
kenster1092
K
J
Emission problems
  • jls.zmmr
  • Feb 5, 2026
  • 1994 - 1995 Specific Tech
Replies
2
Views
290
1994 - 1995 Specific Tech Feb 7, 2026
AeroCoupe
G
1991 GT 5.0 running hot
  • gvanginkel403
  • Jul 1, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
209
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jul 2, 2026
General karthief
L
Drivetrain 2000 GT High Idle - Pulling Out Hair - Help
  • lleonard1185
  • Jan 18, 2025
  • SN95 4.6L Mustang Tech
Replies
9
Views
631
SN95 4.6L Mustang Tech Jun 4, 2025
Leo090
L
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?