Audi A4 coolant leak

Dual wheels · 08-03-2021 04:50PM #1

Was driving along on a short journey yesterday the coolant warning came on opened the bonet coolant was gone, topped up got home and could see it dripping under the car, if I leave the car idle it will empty to well under the min level, no smoke coming out of the exhaust no oil in the coolant tank, any idea what the leak might be?

Moanin · 08-03-2021 06:15PM

It could be a loose pipe somewhere.

Did you follow the pipe from the coolant expansion bottle to see if you've a loose connection anywhere?

biko · 08-03-2021 06:18PM

If you topped up to the Max level just keep an eye on it over the next days/weeks to see if it drops again.

0lddog · 08-03-2021 06:22PM

With what did you top it up ?

Dual wheels · 08-03-2021 06:25PM

Moanin wrote: »

It could be a loose pipe somewhere.

Did you follow the pipe from the coolant expansion bottle to see if you've a loose connection anywhere?

Yea I can’t see any leak on top only dripping on the ground

hamburg · 11-03-2021 04:59AM

Dual wheels wrote: »

Yea I can’t see any leak on top only dripping on the ground

i gonna say leaking from waterpump behind the cambelt cover.

Dual wheels · 11-03-2021 09:00PM

hamburg wrote: »

i gonna say leaking from waterpump behind the cambelt cover.

I got a lad to look at it and he reckons it’s a leak in a pipe but must be in at the back as he couldn’t see it but I got some k seal and hopped it into it and a couple of days later the leak seems to have stopped would it normally take that long to kick in? I had only drove it half an hour each day

hamburg · 12-03-2021 12:05AM

i guess only time will tell.

Cass · 16-03-2021 11:43PM

Bit late to the thread but have you checked the coolant flange. A known failure point and will give a steady leak which increases when driving but continues (albeit much slower) when parked up. Had to replace it on my A6.

Dual wheels · 17-03-2021 02:45AM

Cass wrote: »

Bit late to the thread but have you checked the coolant flange. A known failure point and will give a steady leak which increases when driving but continues (albeit much slower) when parked up. Had to replace it on my A6.

I threw a tin of k seal into it and it seems to have solved the issue so I think it was a leaky pipe

BavarianCare · 17-03-2021 04:53AM

Dual wheels wrote: »

Was driving along on a short journey yesterday the coolant warning came on opened the bonet coolant was gone, topped up got home and could see it dripping under the car, if I leave the car idle it will empty to well under the min level, no smoke coming out of the exhaust no oil in the coolant tank, any idea what the leak might be?

What model?
Reg?

Plenty of issues with VAG but varies with model

Audi A4 coolant leak

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