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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

blue smoke after revving high/racing

  • Thread starter Thread starter admstng
  • Start date Start date Jun 3, 2004

admstng

New Member
Dec 12, 2003
128
0
0
Jun 3, 2004
#1
  • Jun 3, 2004
  • #1
why does blue smoke come out from my exhaust when i rev really high?
 

Look Its Aaron

Your car looks like it came straight from Mexico.
Founding Member
Nov 18, 2001
2,634
0
48
Fontana, Cali
Jun 3, 2004
#2
  • Jun 3, 2004
  • #2
Most likely you your engine is expeirenceing blow by. Oil from the crankcase is probbly getting by your piston rings and getting into your combustion chamber, cause the oil to burn off cause blue smoke.
 

blkstangman88

New Member
Apr 6, 2004
646
0
0
Jun 3, 2004
#3
  • Jun 3, 2004
  • #3
rings are probly shot.....(to much racing)
 

admstng

New Member
Dec 12, 2003
128
0
0
Jun 3, 2004
#4
  • Jun 3, 2004
  • #4
....



thanks guys
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jun 3, 2004
#5
  • Jun 3, 2004
  • #5
eating oil, might want to pull a leak down test to see if it is the seals or the rings if it bugs you that much.
 
R

riceater89-5.0

New Member
Jun 3, 2004
55
0
0
kentucky
Jun 3, 2004
#6
  • Jun 3, 2004
  • #6
valve job
 

denmark88

Founding Member
Dec 13, 1998
994
0
0
Fairfax, VA
Jun 3, 2004
#7
  • Jun 3, 2004
  • #7
I'd say its your cylinder rings too. Don't worry about it if it's not blowing smoke all the time. It's not like it's a new engine or anything, when you beat on it, it's bound to have some blow by. As long as it's still running ok, you're fine.
 

AznStanger3v

Active Member
Aug 11, 2003
2,026
0
47
Northern VA
Jun 3, 2004
#8
  • Jun 3, 2004
  • #8
damn, im experiencing the EXACT same thing. Hey stangman, i too am in the greatest county of all, Stafford!
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Jun 4, 2004
#9
  • Jun 4, 2004
  • #9
17yrOldStanger said:
damn, im experiencing the EXACT same thing. Hey stangman, i too am in the greatest county of all, Stafford!
Click to expand...
canary yellow stang see em 24/7 here what is your name? good to meet some one from the same place as me. now when i get my stang back on the road soon you will know what i have under the hood.
 

FiveOhhStang

New Member
Jan 27, 2003
299
0
0
Sanger, Cali.
Jun 4, 2004
#10
  • Jun 4, 2004
  • #10
What wieght Oil are you using? I went from 10-40 to 20-50 & Solved the problem for the most part. I am now using Mobil 1 15-50 Synthetic. Only Praises, This is really good oil!
 

admstng

New Member
Dec 12, 2003
128
0
0
Jun 4, 2004
#11
  • Jun 4, 2004
  • #11
FiveOhhStang said:
What wieght Oil are you using? I went from 10-40 to 20-50 & Solved the problem for the most part. I am now using Mobil 1 15-50 Synthetic. Only Praises, This is really good oil!
Click to expand...


I always put 10-40 in... but when my valve cover gaskets were leaking (now replaced) I put in 20-50 to slow the leak... so now I have a mixture of 10-40 and 20-50.. i would say 80% is 10-40....
 
V

v8only

Active Member
Jul 3, 2003
2,378
22
49
Jun 4, 2004
#12
  • Jun 4, 2004
  • #12
it's common for mustangs to burn a little oil. from what I understand, they have weak oil rings, but strong compression rings. I've been going through a quart every few hundred miles, yet the car screams still with 186k on the clock.
 
S

sublime29

New Member
Mar 18, 2004
110
0
0
Jun 4, 2004
#13
  • Jun 4, 2004
  • #13
You might have some older oil or even new oil in the crankcase.The beating as you call it is heating up the oil more then usual and thinning it out.So then it slips past your kinda worn rings.Also metal shrinks when it gets hot also(pistons).If it were the valve stem seals it should do it all the time.Older oil loses its viscosity as it gets old and the detergents added also deminish.
 

5.0_Gil_89

Founding Member
Oct 13, 2001
163
0
16
Germany
Jun 5, 2004
#14
  • Jun 5, 2004
  • #14
With the engine running see if you get any blow-by out of the filler cap(cap off of course). Also look under the cap (after the engine is at operating temp) and see if there is any oil comtamination milky color or greyish color. That narrow down rings or may be a leaky head gasket. Obviously if it was a head gasket the smoke would be on the white side. Hope it helps.
 
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