Sound Of Air Sputtering On Underside Of Car Towards Exhaust Manifold Area.

sstewart326

New Member
Dec 5, 2013
6
0
2
29
2000 gt

I recently noticed the sound of air coming from the underside of the stang towards the engine bay. I haven't jacked her up yet so I cannot pinpoint where the sound is coming from. When I'm just driving the car, the sound is not evident. I only hear it if my windows or door is open and the car is idling. It would be tough to hear when reving or driving because the exhaust masks the sound. Mechanically, the car is running great. I had one of my friends plug my exhaust while I listened and the sound did not change; it remained constant. The sound that I'm hearing almost sounds like a steam train (just not as intense).

I have had a manifold leak on my old v6 mustang, and this does not sound like my v6 sounded. For one, the sound of the leak on the v6 would go away once the car warmed up. On my gt, the sound remains even when the car is at operating temperature. Plus, it's less of a clicking noise and more of a sputtering air kind of noise.
 
  • Sponsors(?)


sstewart326

New Member
Dec 5, 2013
6
0
2
29
so I went on this site http://www.popularmechanics.com/cars/how-to/repair/1833626 and my problem sounds exactly like this :

noise: FFFFffff ttttFFFF ffff ttttFFFFffff tttt
WHERE: Under the hood.
WHEN: Most noticeable at idle.
WHAT: An exhaust manifold gasket has failed, venting hot exhaust gases to the air.
URGENCY: It's not getting better on its own. The blowtorch of corrosive gases will eventually damage the manifold. Oh, by the way: Carbon monoxide from the leak may make you drowsy or dead.
FIX: Replace the exhaust manifold gasket before the leak eats a hole in the manifold.


Anyone have there exhaust manifold gasket go bad on them?
 

sstewart326

New Member
Dec 5, 2013
6
0
2
29
Might be a great time to upgrade to long tube headers. :nice:
I was thinking the same thing. Now I have an excuse (sort of) to put on some headers. But I need to pass emissions, and correct me if I'm wrong, but I thought long tube headers will not pass emissions. Which comes to another question: are shortys worth it? Right now I just have an H-pipe with some flowmasters
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
28,681
10,733
224
Box behind Walmart
www.stangnet.com
I was thinking the same thing. Now I have an excuse (sort of) to put on some headers. But I need to pass emissions, and correct me if I'm wrong, but I thought long tube headers will not pass emissions. Which comes to another question: are shortys worth it? Right now I just have an H-pipe with some flowmasters
What state and county are you in?
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
28,681
10,733
224
Box behind Walmart
www.stangnet.com
Gwinnett County Ga right outside of Atlanta

What tests will be performed?
All subject vehicles will receive a three-part inspection:

  • An OBD test to check the vehicle’s emissions control performance history.
  • A fuel cap inspection to check for adequate seal.
  • A visual inspection of the catalytic converter to check for tampering or removal.
All 1995 and older model year vehicles will receive:

  • A TSI test or an Accelerated Simulation Mode (ASM2) test – This dual-mode test includes a 25/25 test (25 percent load at 25 MPH) and a 50/15 test (50 percent load at 15 MPH).
  • A fuel cap inspection to check for adequate seal.
  • A visual inspection of the catalytic converter to check for tampering or removal.
An inspector can reject a vehicle for testing if it is considered unsafe to test. If the test has already begun when the safety problem is detected, the inspector may charge the full price of the test.

Your catalytic converters will have to be mounted in the stock locations. You will be required to have the factory number of converters (even though 3-way are more efficient).

What it all means is that long tubes could be pretty expensive for you. I'd toss on some shorties and put the rest of the cash toward a blower.
 
Thread starter Similar threads Forum Replies Date
trlps_ 02’ Mustang GT flutter like sound 1996 - 2004 SN95 Mustang -General/Talk- 6
M Cold air intake popping sound 2015+ (S550) Mustang -General/Talk 3
justin82 Weird "blowing" Air Sound Wind Shifting Fox 5.0 Mustang Tech 19
Opposedodie air sound Fox 5.0 Mustang Tech 2
B Short Power Loss w/ Compressed Air Sound from Rear of Car SN95 4.6L Mustang Tech 2
8 Air leak sound by gas tank Fox 5.0 Mustang Tech 1
2013 Geee T Air/whistle sound when letting out new clutch SN95 4.6L Mustang Tech 2
T Air Sucking Sound from Intake Fox 5.0 Mustang Tech 6
riceslayer302 does this sound like mass air??? Fox 5.0 Mustang Tech 2
D K%N Air filter alturnated the sound of my 06 2005 - 2009 Specific Tech 20
98stangv8 air conditioning "clicking sound... SN95 4.6L Mustang Tech 6
O Hissing/ air release sound, Solved 2005 - 2009 Specific Tech 5
DemonGT Hissing sound from air filter after motor is shut off?? Fox 5.0 Mustang Tech 7
StygianStang Sound Quality With Open Air Subs SN95 4.6L Mustang Tech 10
C Air sound when shifting early? SN95 4.6L Mustang Tech 4
A 93 mustang premium sound radio question 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 15
F Clutch vibration and clacking sound 1996 - 2004 SN95 Mustang -General/Talk- 4
S Strange sound coming from under car? 2001 Mustang GT 1996 - 2004 SN95 Mustang -General/Talk- 1
fitnage Added BBK Long tube/BBK no cat X/Pypes Cat - weird sounds 1996 - 2004 SN95 Mustang -General/Talk- 9
A Can anyone tell me whats up with this exhaust sound? Mustang Sound & Shine All 0
Cammandobrando 97 cobra magnaflow street series 1996 - 2004 SN95 Mustang -General/Talk- 1
B Help please. wiring for alternator upgrade 2010 - 2014 Specific Tech 5
C Wobble sound but not affecting performance 1996 - 2004 SN95 Mustang -General/Talk- 0
N Tapping sound 1996 - 2004 SN95 Mustang -General/Talk- 1
S Suspension Strange sound while driving. Sounds like cards in bike spokes. Fox 5.0 Mustang Tech 5
9 Need held, Strange Sound at Ignition Fox 5.0 Mustang Tech 2
Essn95 Sound cuts out at high volumes/bass Mustang Sound & Shine All 1
justinmurray2001 weird sounds 1996 - 2004 SN95 Mustang -General/Talk- 1
J Tune Causing Problems 1996 - 2004 SN95 Mustang -General/Talk- 5
0 Thumping sound 2005 - 2014 S-197 Mustang -General/Talk- 1
K Engine My 2019 Mustang GT sounds different after repairs 2015+ Specific Tech 0
CtCarl '87 LX hatchback with Premium Sound...where are the factory bass blockers for the 3.5" dash speakers located? Mustang Sound & Shine All 0
B Engine Sound normal ?gt stock everything. Owned for 1 year 2005 - 2009 Specific Tech 1
MrPerfect2 What does the idle sound like if timing is 14 vs 12 degrees 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 18
DY123 Sound system 2019 GT 2015+ (S550) Mustang -General/Talk 2
O Best Cams for Old Muscle car sound? 1996 - 2004 SN95 Mustang -General/Talk- 7
ScarlettGT Sound Speaker help 2014 GT 2010 - 2014 Specific Tech 5
D My Mach 460 front tweeters sound like junk at high volume 1996 - 2004 SN95 Mustang -General/Talk- 1
MrPerfect2 Engine 1991 - What does a normal idle suppose to sound like on OEM 5.0 ? Fox 5.0 Mustang Tech 7
V Engine 91 LX Rhythmic Thumping sound and high idle Fox 5.0 Mustang Tech 6
C Screeching sound from under the hood at 2k rpm in 2nd and 3rd SN95 4.6L Mustang Tech 3
D Awful rubbing sounds like its coming from driver's side front wheel area 2005 - 2014 S-197 Mustang -General/Talk- 1
C Engine 89 GT - Is this what a vacuum leak sounds like? Fox 5.0 Mustang Tech 11
D Please help - mystery rubbing sound (it's not a wheel bearing assembly) 2005 - 2014 S-197 Mustang -General/Talk- 2
Noobz347 The Last "What's the Best Sounding Exhaust" Thread - Mustang 2020 2015+ (S550) Mustang -General/Talk 2
D Suspension S197 Clunking/rattling sound when accelerating and turning right? 2005 - 2009 Specific Tech 2
NurseGuy Best sounding exhaust on a budget 1996 - 2004 SN95 Mustang -General/Talk- 0
Texas Stangalang 3v Engine tick/ slight knocking sound 2005 - 2014 S-197 Mustang -General/Talk- 14
K Clicking sound From Top of Engine (VIDEO INCLUDED) SN95 4.6L Mustang Tech 3
Cam Coppola No Sound 1994 - 1995 Specific Tech 2
Similar threads