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Intermittent Water Leak
Posted: Sat May 13, 2017 10:46 pm
by RAS
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?
Re: Intermittent Water Leak
Posted: Sat May 13, 2017 11:14 pm
by Lukes3
Aux radiator,
One either side on the rs4. Commom thing.
Re: Intermittent Water Leak
Posted: Sat May 13, 2017 11:23 pm
by Jon_J
Head light washers? Does it leak when you wash the screen with the lights on?
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Re: Intermittent Water Leak
Posted: Sat May 13, 2017 11:27 pm
by RAS
Thanks folks. It would be good if it was the headlight washers, however it's more than likely the aux radiator!
Re: Intermittent Water Leak
Posted: Sun May 14, 2017 12:09 am
by Jon_J
Intermittent? If it was aux rad why intermittent? Surely it would leak all the time?
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Re: Intermittent Water Leak
Posted: Sun May 14, 2017 7:00 am
by Fun and games
My Aux rad only leaked when it fancied it, some days it wouldnt leak, other days it used a fair amount.
Re: Intermittent Water Leak
Posted: Sun May 14, 2017 8:46 am
by RAS
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.
Re: Intermittent Water Leak
Posted: Sun May 14, 2017 11:58 am
by nij
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.
Re: Intermittent Water Leak
Posted: Sun May 14, 2017 1:04 pm
by RAS
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.
Re: Intermittent Water Leak
Posted: Fri May 19, 2017 9:57 am
by RAS
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?
Re: Intermittent Water Leak
Posted: Fri May 19, 2017 10:32 am
by Starry
If it's the off side then bin it fit a cold air feed...
Re: Intermittent Water Leak
Posted: Fri May 19, 2017 7:30 pm
by RAS
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.
Re: Intermittent Water Leak
Posted: Fri May 19, 2017 8:36 pm
by Starry
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.
Re: Intermittent Water Leak
Posted: Fri May 19, 2017 8:38 pm
by Starry
Re: Intermittent Water Leak
Posted: Fri May 19, 2017 8:58 pm
by Fun and games
My finished example instead of replacing with another aux rad