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Sound of Water gushing under the car when pressing the gas!

#1 User is offline   h4mmer 

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Posted 14 January 2012 - 07:10 PM

Hi All,

Recently, when starting the car, I get a gushing sound of water underneath the car when I press the gas, even slightly and even when the car is stationary!??

Tried to search for possible reasons.. couldnt find anything constructive. Any Ideas?

Thanks

H.

#2 User is offline   Senna fan 

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Posted 14 January 2012 - 07:16 PM

View Posth4mmer, on 14 January 2012 - 07:10 PM, said:

Hi All,

Recently, when starting the car, I get a gushing sound of water underneath the car when I press the gas, even slightly and even when the car is stationary!??

Tried to search for possible reasons.. couldnt find anything constructive. Any Ideas?

Thanks

H.

I had the same thing last week.
It's water pooling in the back boxes of the exhausts.
Give it a good long high revving run 40 mins plus should get rid of it. :)
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#3 User is offline   m1bjr 

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Posted 14 January 2012 - 09:19 PM

Maybe a rattling heat shield over the cat too.

Sennas right though, I took the back of teh R26 system off for an upgrade and the rear silencer had ONE PINT of water in it LOL!


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#4 User is offline   h4mmer 

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Posted 15 January 2012 - 05:30 PM

Really? wouldnt it evaporate after a long time, given the temp of the exhaust? The water noise is there consistently. Now matter how long Ive driven, if I rev the car, you hear the water gush underneath!

something to do with Coolant? or headgasket?? Havnt noticed any over heating..

#5 User is offline   NineBolts 

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Posted 15 January 2012 - 06:25 PM

When I changed from the OEM manifold and cat I thought my car sounded like I could hear running water. I got used to it.

what does it sound like outside of the car?
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#6 User is offline   Senna fan 

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Posted 16 January 2012 - 02:24 AM

View Posth4mmer, on 15 January 2012 - 05:30 PM, said:

Really? wouldnt it evaporate after a long time, given the temp of the exhaust? The water noise is there consistently. Now matter how long Ive driven, if I rev the car, you hear the water gush underneath!

something to do with Coolant? or headgasket?? Havnt noticed any over heating..


Yep, am in no doubt, this time of the year the cold air meets warm exhaust and creates pints of condensation.
U will not get this in warmer weather...

#7 User is offline   lower 

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Posted 16 January 2012 - 04:18 AM

View Posth4mmer, on 15 January 2012 - 05:30 PM, said:

Really? wouldnt it evaporate after a long time, given the temp of the exhaust? The water noise is there consistently. Now matter how long Ive driven, if I rev the car, you hear the water gush underneath!

something to do with Coolant? or headgasket?? Havnt noticed any over heating..


If its constant its more likely to be a rattle from somewhere that just sounds like gushing water.

Unless you have an airlock in the coolant system, but i'f be surprised if that was the noise. Does the heater work ok?
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#8 User is offline   lovegroova 

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Posted 16 January 2012 - 05:32 AM

View PostSenna fan, on 16 January 2012 - 02:24 AM, said:


Yep, am in no doubt, this time of the year the cold air meets warm exhaust and creates pints of condensation.
U will not get this in warmer weather...


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#9 User is offline   h4mmer 

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Posted 16 January 2012 - 07:09 AM

It is definitely water Im hearing.. can't be mistaken for a rattle.

Havnt listened to it from the outside, so cant say how it sounds.

No changes to heating or running temperature.

Guess it might be water in the exhaust..

but sure as hell doesnt sound healthy!

Thanks anyway.

#10 User is offline   WinFreak 

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Posted 16 January 2012 - 07:56 AM

If you try and move the car when parked can you hear it then? Like when you open the door and stand in the sill and jump a bit?
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#11 User is offline   Floppy 

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Posted 16 January 2012 - 10:35 AM

A decat can make a wooshing noise like its water flowing through a pipe as well if its the unbaffled type...Thats normally on WOT though and on upchanges. My BERK decat did that all the time but my new one with a baffle in it is quiet.
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#12 User is offline   Benjamico 

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Posted 16 January 2012 - 02:59 PM

I have the same... Have you checked inside your boot underneath the tool kit? Mine was absolutely soaked, haven't had a chance to investigate yet but I imagine my hood drains are blocked or something similar

#13 User is offline   Senna fan 

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Posted 16 January 2012 - 04:09 PM

View Postlovegroova, on 16 January 2012 - 05:32 AM, said:

View PostSenna fan, on 16 January 2012 - 02:24 AM, said:


Yep, am in no doubt, this time of the year the cold air meets warm exhaust and creates pints of condensation.
U will not get this in warmer weather...


Moderator comment: Please do not use text speak in this forum, thank you. http://www.s2ki.com/...ead-this-first/

Sorry Mod. I hate text speak. A genuine pilot error there.


Must say to OP again that mine was exactly same last week. Fired her up and got loads of gurgling water sounds then stuck my head under and could tell it was back boxes. Hard revving for 40 mins produced a better water fountain than my jet wash!

As I said, I think so much water (mine spat out about 1-2 litres!) is a winter phenomenon... :rolleyes:

#14 User is offline   S2000_FUN 

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Posted 17 January 2012 - 02:07 AM

This does sound to me like air in the cooling system. Ususally you get this noise until the cooling system builds up pressure. So if you have it constantly is very strange. If you don't have water in the boot were the tools are then I would try to bleed the system first before i start looking for another reason. Also try to open the radiator cap when the car is completely cold. If you get a gushing sound from air as soon as you open it then this is an indication of air trapped in the system.
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