Intermittent Water Leak

4.2 V8 32v Naturally Aspirated - 414 bhp
Post Reply
RAS
Neutral
Posts: 38
Joined: Sat Jan 26, 2008 11:32 am
Location: Aberdeenshire

Intermittent Water Leak

Post by RAS » Sat May 13, 2017 10:46 pm

I have an intermittent water leak that appears to come out of the front bumper, in front of the front off side wheel.

Any suggestions as to where the water could be coming from?
Top
Lukes3
4th Gear
Posts: 657
Joined: Tue Dec 04, 2012 3:56 pm

Re: Intermittent Water Leak

Post by Lukes3 » Sat May 13, 2017 11:14 pm

Aux radiator,
One either side on the rs4. Commom thing.
Current-saloon rs4,Full decat Xpipe miltek,cold air feed,BMC air filter, TTS supercharged, MRC stage 3 L/C F/S,hell s+s brake lines,AP racing rotors + vagbremtechnic bells, kw v3s clifford 650mk2

Gone-audi s3 8p stage2+ with loba lo400 turbo.
Top
User avatar
Jon_J
5th Gear
Posts: 1383
Joined: Sat Feb 04, 2017 12:20 am

Re: Intermittent Water Leak

Post by Jon_J » Sat May 13, 2017 11:23 pm

Head light washers? Does it leak when you wash the screen with the lights on?


Sent from my iPhone using Tapatalk
RS4 B7 Sprint Blue
- Titanium Pack
- Black Optics
- B16's
- RNSE2 with AMI
- Reverse Camera
- Full Stereo install

S5 8T Cab White
S4 B7 Phantom Black (gone but not forgotten)
A4 B7 Avant 2.7 TDI Brilliant Red
A5 Cab 3.0 TDI Phantom Black
Top
RAS
Neutral
Posts: 38
Joined: Sat Jan 26, 2008 11:32 am
Location: Aberdeenshire

Re: Intermittent Water Leak

Post by RAS » Sat May 13, 2017 11:27 pm

Thanks folks. It would be good if it was the headlight washers, however it's more than likely the aux radiator!
Top
User avatar
Jon_J
5th Gear
Posts: 1383
Joined: Sat Feb 04, 2017 12:20 am

Re: Intermittent Water Leak

Post by Jon_J » Sun May 14, 2017 12:09 am

Intermittent? If it was aux rad why intermittent? Surely it would leak all the time?


Sent from my iPhone using Tapatalk
RS4 B7 Sprint Blue
- Titanium Pack
- Black Optics
- B16's
- RNSE2 with AMI
- Reverse Camera
- Full Stereo install

S5 8T Cab White
S4 B7 Phantom Black (gone but not forgotten)
A4 B7 Avant 2.7 TDI Brilliant Red
A5 Cab 3.0 TDI Phantom Black
Top
Fun and games
2nd Gear
Posts: 120
Joined: Fri Jan 20, 2017 11:19 pm

Re: Intermittent Water Leak

Post by Fun and games » Sun May 14, 2017 7:00 am

My Aux rad only leaked when it fancied it, some days it wouldnt leak, other days it used a fair amount.
Top
RAS
Neutral
Posts: 38
Joined: Sat Jan 26, 2008 11:32 am
Location: Aberdeenshire

Re: Intermittent Water Leak

Post by RAS » Sun May 14, 2017 8:46 am

There is occasionally steam emits from that corner of the car when I join a traffic queue, so fairly conclusive that it's an aux rad.

Not a clue why it would be intermittent.
Top
User avatar
nij
4th Gear
Posts: 541
Joined: Tue Sep 14, 2010 3:44 pm
Location: Newcastle

Re: Intermittent Water Leak

Post by nij » Sun May 14, 2017 11:58 am

The aux rads are only used as an additional cooling when coolant reach a higher temperature, otherwise the thermostatic valve stay close, so no water will circulate the aux rads.
Phantom Black R8 V10 plus, Capristo Exhaust
Phantom Black (B7) RS4 Saloon, MRC Stage 2
Mercedes E-Coupe 350CDi
Top
RAS
Neutral
Posts: 38
Joined: Sat Jan 26, 2008 11:32 am
Location: Aberdeenshire

Re: Intermittent Water Leak

Post by RAS » Sun May 14, 2017 1:04 pm

nij wrote: ↑
Sun May 14, 2017 11:58 am
 The aux rads are only used as an additional cooling when coolant reach a higher temperature, otherwise the thermostatic valve stay close, so no water will circulate the aux rads.
Makes sense. Thank-you.
Top
RAS
Neutral
Posts: 38
Joined: Sat Jan 26, 2008 11:32 am
Location: Aberdeenshire

Re: Intermittent Water Leak

Post by RAS » Fri May 19, 2017 9:57 am

What is it that'll be leaking. Is it the radiator or a hose that is connected to the radiator?

If it's the radiator, has anybody had any success using a radiator sealant, rather than replacing the radiator?
Top
User avatar
Starry
4th Gear
Posts: 777
Joined: Fri Jul 15, 2016 9:42 pm

Re: Intermittent Water Leak

Post by Starry » Fri May 19, 2017 10:32 am

If it's the off side then bin it fit a cold air feed...
2006 RS4
Phantom black
MRC Stage 2, Milltek non res, pre cat delete,
Image
Top
RAS
Neutral
Posts: 38
Joined: Sat Jan 26, 2008 11:32 am
Location: Aberdeenshire

Re: Intermittent Water Leak

Post by RAS » Fri May 19, 2017 7:30 pm

Starry wrote: ↑
Fri May 19, 2017 10:32 am
 If it's the off side then bin it fit a cold air feed...
It is the off side. Could you send me a link to see what this looks like please.
Top
User avatar
Starry
4th Gear
Posts: 777
Joined: Fri Jul 15, 2016 9:42 pm

Re: Intermittent Water Leak

Post by Starry » Fri May 19, 2017 8:36 pm

RAS wrote: ↑
Fri May 19, 2017 7:30 pm
Starry wrote: ↑
Fri May 19, 2017 10:32 am
 If it's the off side then bin it fit a cold air feed...
It is the off side. Could you send me a link to see what this looks like please.
My aux is working fine atm so I've not done it but its a very common mod. Just do a search mate.
2006 RS4
Phantom black
MRC Stage 2, Milltek non res, pre cat delete,
Image
Top
User avatar
Starry
4th Gear
Posts: 777
Joined: Fri Jul 15, 2016 9:42 pm

Re: Intermittent Water Leak

Post by Starry » Fri May 19, 2017 8:38 pm

Have a look at this.

viewtopic.php?f=35&t=98322&hilit=cold+air+feed
2006 RS4
Phantom black
MRC Stage 2, Milltek non res, pre cat delete,
Image
Top
Fun and games
2nd Gear
Posts: 120
Joined: Fri Jan 20, 2017 11:19 pm

Re: Intermittent Water Leak

Post by Fun and games » Fri May 19, 2017 8:58 pm

My finished example instead of replacing with another aux rad
Attachments
20170511_183755.jpg
Top
Post Reply

Return to “RS4 (B7 Typ 8E) 2006–2008”

Who is online

Users browsing this forum: Google Adsense [Bot], Majestic-12 [Bot] and 137 guests