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

Bad exhaust smell inside car?

  • Thread starter Thread starter Cardinal Sin89
  • Start date Start date Mar 24, 2010
C

Cardinal Sin89

New Member
Dec 8, 2009
36
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0
Mar 24, 2010
#1
  • Mar 24, 2010
  • #1
I just put a original cobra intake on my car and deleted the smog pump. Now I have a really bad exhaust smell inside my car, and today when I came to a stop sign I seen some blue smoke come out of my exhaust. Anybody have any ideas. Any help is apreciated.
 
9

93luv

Member
Feb 24, 2010
35
0
7
san antonio
Mar 24, 2010
#2
  • Mar 24, 2010
  • #2
blue smoke im pretty sure is caused by oil entering the cylinder.
check your spark plugs, see if they got oil on them.
as for the smell, it might be just an exhaust leak coming in from a crack some where..maybe shifter area.

(thought) leaking valve cover gasket could let oil run down into an exhaust leak , causing exhaust smell and oil burning blue smoke at the same time
make sure your headers are on tight with gasket

also, if you put your cobra intake on yourself did you put on all gaskets... cuz that could cause vacuum leak sucking in any oil nearby...possibly from leaky valvecover.
 

BlackGT89

Member
Dec 16, 2002
774
8
18
Huntsville, AL
Mar 24, 2010
#3
  • Mar 24, 2010
  • #3
Are you running dumps ? If so might want to consider tails. Blue smoke at idle or upon startup can mean bad valve guides / seals...
 
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Cardinal Sin89

New Member
Dec 8, 2009
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0
Mar 24, 2010
#4
  • Mar 24, 2010
  • #4
Checked valve cover gaskets all looks good there, I dont hear any exhaust leak but i am going to check the header flange tomorrow to make sure they are tight. Thanks for the help.
 
9

93luv

Member
Feb 24, 2010
35
0
7
san antonio
Mar 24, 2010
#5
  • Mar 24, 2010
  • #5
piston rings too but i didnt want to scare him just yet .lol.
 

bigvino

Member
Mar 22, 2010
259
1
19
Corpus Christi, TEXAS
Mar 24, 2010
#6
  • Mar 24, 2010
  • #6
what do u mean by running "dumps"??? is that with no tailpipes leaving the muffler??
 

MustangLX-5.0

Founding Member
Dec 2, 2000
856
7
38
Lehigh Acres Fla.
Mar 24, 2010
#7
  • Mar 24, 2010
  • #7
Dumps are small smooth cornered elbows. A piece of pipe on the back of the muffler that curves down.. hence the term "Dumps" because it dumps the exhaust out the muffler directed at the ground. It makes everything a lot louder, but it also makse exhaust stink up your car.

And yeah, if you have dumps, it WILL stink up your car, especially if the temperature control is set in the hot position. Exhaust will enter through the outside air duct. You dont even have to have the blower motor on, it still gets in. Try turning it to the cool setting that way its not pulling outside air in.

5.0's have stinky ass exhaust, especially if you get rid of your cats and maybe even the smog pump. The exhaust on my 92 makes my eyes burn, and I smell like exhaust after getting out of it. 5.0's need cats. My guess is the combustion isnt as efficient as newer cars. My 96 has blown out cats and it doesn't smell that bad at all.
 

bigvino

Member
Mar 22, 2010
259
1
19
Corpus Christi, TEXAS
Mar 25, 2010
#8
  • Mar 25, 2010
  • #8
yea dude my cockpit smells horrible!! i think its because i dont have tailpipes and theres a hole underneath the shifter...but and I totally hear where your comin from about your EYES BURNING...LOL..but hopefully i can get under the car this weekend to make sure there arent any holes in the exhaust system.
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
Jul 6, 2006
5,232
2,652
223
gainesville
Mar 25, 2010
#9
  • Mar 25, 2010
  • #9
check for holes and loose connections at the intermediate pipe and header collectors. running seafoam through the engine will help smoke out all the exhaust leaks
 
C

Cardinal Sin89

New Member
Dec 8, 2009
36
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0
Mar 25, 2010
#10
  • Mar 25, 2010
  • #10
I am running tailpipes, today i didnt notice it as much.
 
S

slow87GT

Founding Member
Jun 5, 2000
162
0
0
Tonawanda NY
Mar 25, 2010
#11
  • Mar 25, 2010
  • #11
you deleted the air pump, but are the thermactor ports open on the back of the heads?

do you have the larger revised baffle under the pcv valve? if not its probably consuming oil(they all do)
 
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