Golf/GTI VI :: Loud Hissing Noise - Exhaust Leak?
Jul 23, 2011
I feel as though my APR turboback has an exhaust leak.
There is a loud hissing noise that overwhelms the exhaust, turbo and engine noise. What it is. Sounds like a loud hissing when then turbo begins to kick it. Not normal, and it slowly has gotten worse and more noticeable.
I have a feeling its the downpipe, but I can't check it myself. When i give it gas and the hood is open (at a standstill obviously), the engine compartment smells like exhaust fumes.
Could be playing mind games with myself. What do you all think? Any way to surely test and see? I am taking it to dealership on Tuesday to double check.
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Today i went out side to warm up my car before heading out to work ... When i started my car i got out and i hear a Loud HISSING sound ??? So i popped the hood and it just got louder ?? sounds like its coming from the top of the motor and also on the left side by the belts ??? its a 2004 R32 and i just hit 80K miles?? What it could be ??
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So for the last 2 days I heard this loud hissing noise from the passenger side of the car and also noticed that my boost won't go over 24lbs. So I called my local tuner shop Innovative motor sport in Stratford and was told to bring it down to check it out. Less then an hr later I was at the shop and we where putting it up on the ramps to get under to take a look. I took out the panel covering under the motor and looked up to find a hole in my turbo outlet coupler. Tom at IMS had an extra laying around and let me use it till I get a replacement.
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Well I've just noticed something quite annoying today... a very slight hissing sound coming from under the rear end of the car. A friend I drove to work this morning even said "what's that noise?".... It reminds me of the sound you'll hear when there is a pinhole in a joint weld, or a clamp is loose? My car only has 2800km on it!
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02 GTI 1.8T ... Stage 2
Was running the car at about 4500 rpms in 5th gear. All of a sudden lost power and heard a loud whooshing/ hissing of air which sounded like it was coming from under the front passenger side of the car. Lost about 50% of power in all gears. What I screwed up and broke?
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I was in my first torrential downpour in the R yesterday and when it was at its worst the exhaust suddenly went from flapper-modded to extremely loud, from what sounded like the center point of the car, almost as if the exhaust joint came loose, but once it had a minute to dry after the rain stopped it went away.
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2005 jetta. On the highway when I hit about 75mph I hear this loud humming coming from either the engine or the exhaust, I'm not sure. It disappears immediately once I cross about 82mph. What could this be? Why such a specific range?
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Recently had an aftermarket turbo back exhaust system installed. After driving for a short while, I noticed that between 2500 and 3500 RPMs the noise was very loud. Once I hit the highway (in which the engine almost exclusively hangs around those numbers), it was almost unbearable to sit in the car while having that constant droning sound. I have had and been in cars with aftermarket exhaust systems before and never heard anything quite like this. It is pretty tame below 2500 and once you hit 4000, it sounds quite nice and that horrible drone goes away. I really trust the shop that did the work, so I doubt it was faulty install. Could it be a faulty design or maybe just the one that I received?
This exhaust is from a reputable maker and they designed this system specifically for the Golf R. I did have some other mods done at the same time (Coilovers, Engine Mount Insert, Intake and a Tune). I know the insert may cause a little bit of vibration and hence a little bit of extra noise, but nothing like this. While driving on the highway at 3000 RPMs, I cannot even clearly see the cars behind me through the rear windshield as there is so much vibration from all the noise.
Forgot to mention, this TBE is resonated with a CAT, so even more reason for concern. Would expect it to be quiet by comparison to a CAT-less non-resonated system
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Finally got the car started after over a year of acquiring parts and labor. Cylinder 5&6 had misfires due to faulty injector harnesses. That issue has resolved. But I am getting a pretty distinct exhaust leak noise coming from the manifold area and i cannot figure out where it is coming from. We smoke tested it and still can't find the leak.
Things we checked:
-Head to manifold (all nuts tight)
-Manifold to turbo (all nuts tight)
-Turbo to downpipe (2 vbands both tight)
-Wastegate (2bolt manifold to adapter tight and vband adapter to wastgate tight)
-(2) O2 sensor plugs on the maniold (tight)
-All turbo hardware (tight)
-manifold and downpipe have no cracks
Picture:
Video:
[URL] .....
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This morning when I pulled into the garage after taking my daughter to school and shut the car off, I noticed a very loud hissing noise coming from the back end of my car, underneath somewhere. When I came back out an hour later to leave for work, it was still hissing. I drove to work and all was fine, but when I went out to the lot after work my car was completely dead.
I tried jumping it, but it wouldn't even take a charge. I had to find a ride home and will get it towed tomorrow. I'm sure the hissing noise is the cause, but what's going on. My car has never given me any problems--it's run perfectly for almost 150,000 miles (5 speed manual transmission). Maybe this is the end?
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2012 TDI ... OK so out of nowhere, my car is making loud turbo whoosh noise, while I love the way it sounds, it's not normal or intentional, so I don't like it lol. I have an AWE intake, and a gutted turbo resonance damper. Is been fine and same sound ever since those mods but now out of nowhere it is really loud with the whooshing of the turbo.
Small video of it... [URL] ....
Pictures of turbo area .....
Anything look wrong? I circled that one area but wouldn't know if that's normal or not....
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I noticed tonight my 4.6 V-8 Aviator is acting a bit sluggish, not bad, but still noticeable. I'm pretty sure I heard a hissing noise, almost like a vacuum leak. Would that vacuum leak caused by the pcv valve cause sub-par acceleration? I'm going to check the pcv valve in the morning. is there more than one pcv valve.hose on these 4.6 V-8's? I'm asking because I was reading about the pcv hose/valve in these 4.6 V-8's, some people on this forum had vacuum leaks caused by the pcv valve failing, being that it connects to the intake manifold.
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I have a 2000 Suburu Forester the has a hole in the exhaust. I noticed today, the car became very loud during acceleration.
I plan on getting a new car in the next few months, but I was wondering if I could temporarily fix this problem with a sealant or something like that for the time being?? I included a picture of the leak.
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It's been a few days, I heard sound come from the engine bay like is sucking air. Finally I was able find out where the noise coming from. it's tube by the back of intake ram ripped. What is that tube do?
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2002 Jetta 2.0 4-speed auto - 151,xxx miles.
Symptom: when driving, occasionally there is what I can only describe as a fairly loud (but not overwhelming - radio easily drowns it out) hissing+buzzing noise. It's a bit like listening to a small plastic gear grind at a very high speed with a bit of a hissing as a backdrop. It only happens occasionally, and I haven't identified any glaring rhyme or reason to when it happens.
What I can say is I've observed it around shifts on fairly strong acceleration, I've observed it climbing long hills, and I've observed it when cruising ~60mph on the freeway. It SEEMS like it is sensitive to the gas pedal - when I hear it, if I depress the pedal more and accelerate I tend to move beyond it, but if I let the pedal off and decelerate (thinking of the 60 mph freeway case here) I can bring the sound back. And if I continue to decelerate we move past the noise.
So, I can't really tell if it is RPMs, or speed, or engine load, or...
A little about my history with the car: I bought it only 2,000 miles ago, so I can't say much about what is "normal" or has been going on for how long.
A little about the transmission - I know they have a very bad rep. I had the trans fluid changed with the correct type right after purchase. It generally shifts ok. There are occasional delays going from reverse into D, and sometimes shifts on acceleration are less elegant than you'd hope, but it seems to generally function as a 4-speed transmission ought to.
This noise is something failing, and given that seems to relate in some way to speeds/loads/possibly shifts I hope this isn't a sign the transmission is going to suddenly give out.
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I'm just curious, I have milltek catback and lately, i feel like I can hear a very small exhaust leak somewhere under the car. I could be way wrong because I get super paranoid once I hear an odd noise, so anyway would a small leak light up the CEL?
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I did some searching and found someone with the same dsg rattle chatter noise I am getting from my R (check link below)
My R has 102,000 miles, runs excellent but the dsg makes a noise mostly when I am in gear stopped with my foot on the brake. While I was under the car checking out the chatter noise I noticed a faint exhaust leak somewhere in the headers near the flex pipe. I want to fix it and I plan to put on a cat back exhaust very soon but I really don't want to spend the money on a set of headers.
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Under normal driving how loud is the exhaust inside the car with the windows up and the radio on? I know the exhaust is loud as all the reviews say and i know there are videos on youtube of the exhaust but its always either with the windows down or windows up and radio off. I just want to know how much louder than stock it is just cruising with windows up and radio on if i want some sort of quiet.
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Have to do a replacement and if so.. is removed the intake the only way to get at those stubs on the ex manifolds.
I thought it was the flex-pipe.. but after listening to the sound and getting an engine code for b1 s1 the leak has to be before the o2 senor for it to pop a code..
It sounds like a standard header leak from backing out bolts or a faulty gasket leak..
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Is the eip race exhaust to loud for daily driving? People have told me that it would be to loud but I like loud. I looked on YouTube for soundclips but I only found two and one was pretty raspy.
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I have a 2002 Jetta GLS 2.0 4-speed automatic, 151,xxx miles... I have only owned it a couple of thousand miles, so I can't offer much on what is "normal"...
The issue I am having is as follows: I sometimes get a strange buzzing/hissing noise that sounds like it is coming from the engine compartment ~45 degrees to my right while driving. It's very hard to describe - the best I can say is it sounds a bit like a little plastic gear is spinning/grinding at high rpms, yielding a buzzing noise, and there is a hissing-like sound as a backdrop.
The sound happens only occasionally (but seems to be happening much more frequently, which is worrisome). I have heard the sound in different driving scenarios, so I can't say "it only happens when...". However, it DOES seem to be sensitive to throttle and driving conditions in some way. I have heard it while a shift is taking place, I have heard it under load on a long incline, and I tend to hear it right around 60mph. Interestingly, in the 60mph example, can make the sound go away by accelerating past 65, or by decelerating down to ~50... it seems like there is some kind of transition taking place at 60 that fosters the sound?
The transmission is generally functional - I had the fluid changed right after buying it (with the correct fluid), and it generally shifts ok. It does have some of the quirky behavior the transmission is known for: occasionally hesitates to go from R to D, sometimes shifts while driving are less subtle than they should be. But I'd say as a whole it operates as a 4-speed transmission would be expected to.
However, since this strange noise is getting worse, and seems to be related to shifts/load/andor speed in some way... I am worried about trans health. What to check? Because it is intermittent, and doesn't exist at idle and rarely appears when going around the block good luck getting a mechanic to observe it...
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