Leak from V8 Vantage
Leak from V8 Vantage
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Discussion

lewisco

Original Poster:

381 posts

150 months

Saturday 4th June 2016
quotequote all
Getting home today noticed some drips on the drive as I got was leaving the garage. It was coming from the front corner of the heat shield under the passenger side front. There were no drips on the inside or the outside faces of the shield but coming from inside it (it looks like its two layers).

It appears to be water and not coolant and the temp gauge for that is in the middle where it should be. It looks like the tank for the washer fluid is on the drivers side but could be that. Today is the first time I've ran the air con for a while. Looking under the bonnet there is no sign of any drips at all.

Not too worried as its under warranty at the moment but I might not have much time to get it in before Le Mans. But any ideas of what it might be?


South tdf

1,829 posts

226 months

Saturday 4th June 2016
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Worth checking and monitoring the fluid levels however I expect it will be condensation from the air con system, especially if it was humid today where you are.

drac

369 posts

254 months

Saturday 4th June 2016
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As air is cooled it's ability to retain water as humidity falls and the water condenses out. Hence when ever you use the AirCon you will end up the water that needs to drained away. I'm not sure where the drainage is on the vantage but I expect what you are describing is perfectly normal. If the condenser ices up slightly this may only melt when you stop running the car and you can end up with quite a puddle in the garage.

You see this frequently in hot and humid countries.

woohoo I might actually have been useful on a forum.

drac

369 posts

254 months

Saturday 4th June 2016
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Oh bugger, if I didn't try to type an essay on an iPhone, I might have been first to answer too!

lewisco

Original Poster:

381 posts

150 months

Saturday 4th June 2016
quotequote all
Thanks for typing the essay though smile

Will check all the levels tomorrow when it's cold. Hopefully it will be nothing then.

It has been quite humid here today too.

lewisco

Original Poster:

381 posts

150 months

Sunday 5th June 2016
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It's still dripping water this morning. Albeit quite slowly. Probably not A/C still?

davek_964

11,336 posts

206 months

Sunday 5th June 2016
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lewisco said:
It's still dripping water this morning. Albeit quite slowly. Probably not A/C still?
Do you mean without running the car? If so, then no - not air con.

lewisco

Original Poster:

381 posts

150 months

Sunday 5th June 2016
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Still dripping this morning and small amount after being off all night and not running it.

Impasse

15,099 posts

272 months

Sunday 5th June 2016
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It's the a/c runoff.

davek_964

11,336 posts

206 months

Sunday 5th June 2016
quotequote all
Impasse said:
It's the a/c runoff.
No it isn't. If it is still dripping when the car has been off for 12 hours plus, it's not the air con.

t400ble

1,804 posts

152 months

Sunday 5th June 2016
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Taste\feel the water


lewisco

Original Poster:

381 posts

150 months

Sunday 5th June 2016
quotequote all
t400ble said:
Taste\feel the water
I did. Definitely water.

paulrog1

1,235 posts

172 months

Sunday 5th June 2016
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If the "water" is clean and doesn't smell of screenwash or radiator coolant it has to be from the ac, simples...

lewisco

Original Poster:

381 posts

150 months

Sunday 5th June 2016
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I think the screenwash is just water. Going to put actual screenwash in tomorrow and go for another run out.

lewisco

Original Poster:

381 posts

150 months

Thursday 9th June 2016
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Spoke to the garage yesterday and they say its fine. Its not a constant drip so will just keep an eye on it and make sure the A/C stays cold.

Murph7355

42,021 posts

287 months

Thursday 9th June 2016
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t400ble said:
Taste\feel the water
But definitely don't do this to maltesers you find on the carpet.

Jockman

18,414 posts

191 months

Thursday 9th June 2016
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Murph7355 said:
t400ble said:
Taste\feel the water
But definitely don't do this to maltesers you find on the carpet.
Especially if your dog's got piles.....

Impasse

15,099 posts

272 months

Thursday 9th June 2016
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lewisco said:
Spoke to the garage yesterday and they say its fine. Its not a constant drip so will just keep an eye on it and make sure the A/C stays cold.
I wonder if you're a little confused about the a/c system? What is leaking isn't from any fluids contained within the car. The a/c system is filled with pressurised gas and if it escapes will revert back to being a gas and will not drip.

The water dripping below your car is essentially condensation. The same atmospheric water you get on windows in cold weather where you have wet glass but it's not the actual glass leaking. All a/c systems have a way of managing this condensation and in a car it's channelled via pipework to dump it out underneath the vehicle.
Rather than being a fault, it's a sign that the a/c is working effectively.

Drips will continue to pool and subsequently flow through the pipework even after the engine is switched off simply because the surfaces are still cool and condensation will still be happening. Usually it just evaporates, but sometimes residual water can drip through the pipework days after you last used the car if its pooled somewhere within the route to the outside world.

lewisco

Original Poster:

381 posts

150 months

Thursday 9th June 2016
quotequote all
Impasse said:
I wonder if you're a little confused about the a/c system? What is leaking isn't from any fluids contained within the car. The a/c system is filled with pressurised gas and if it escapes will revert back to being a gas and will not drip.

The water dripping below your car is essentially condensation. The same atmospheric water you get on windows in cold weather where you have wet glass but it's not the actual glass leaking. All a/c systems have a way of managing this condensation and in a car it's channelled via pipework to dump it out underneath the vehicle.
Rather than being a fault, it's a sign that the a/c is working effectively.

Drips will continue to pool and subsequently flow through the pipework even after the engine is switched off simply because the surfaces are still cool and condensation will still be happening. Usually it just evaporates, but sometimes residual water can drip through the pipework days after you last used the car if its pooled somewhere within the route to the outside world.
Thanks. I know it condenses. Just didn't think it would last that long.

Thanks all smile

peterr96

2,226 posts

206 months

Thursday 9th June 2016
quotequote all
lewisco said:
Impasse said:
I wonder if you're a little confused about the a/c system? What is leaking isn't from any fluids contained within the car. The a/c system is filled with pressurised gas and if it escapes will revert back to being a gas and will not drip.

The water dripping below your car is essentially condensation. The same atmospheric water you get on windows in cold weather where you have wet glass but it's not the actual glass leaking. All a/c systems have a way of managing this condensation and in a car it's channelled via pipework to dump it out underneath the vehicle.
Rather than being a fault, it's a sign that the a/c is working effectively.

Drips will continue to pool and subsequently flow through the pipework even after the engine is switched off simply because the surfaces are still cool and condensation will still be happening. Usually it just evaporates, but sometimes residual water can drip through the pipework days after you last used the car if its pooled somewhere within the route to the outside world.
Thanks. I know it condenses. Just didn't think it would last that long.

Thanks all smile
Impasse, your theory is sound.... but I think your conclusion is wrong.

If the evaporator coil gets blocked with fluff or the system is low on refrigerant gas, the condensation tends to freeze on the coil. This can build up into a solid block. When the car is turned off the aircon ceases to maintain the ice condition which then over a period of time melts and leaves the car via the condensate drain.

That may be why it's dripping for a long time after the car is parked up and is probably a sign of low gas/coil contamination. Either that or the condensate drain pipework is partially blocked in which case the water will stay in the car. I don't know where the evaporator coil is in the car but that could give rise to soggy carpets/musty smells.

If you are planning a long journey I'd have the system checked for gas pressure/cleanliness as knackered aircon can make life pretty miserable.

Condensate will generally stop draining within a very short period of time after switch off on a correctly functioning system. (think minutes not hours)