Mini Cooper 07 loosing water too quick

Mini Cooper 07 loosing water too quick

Author
Discussion

Sam1987...

Original Poster:

8 posts

83 months

Sunday 17th December 2017
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Wondering if anyone can help I had my thermostat housing and water pump changed just over a month ago costing £350 now my car is overheating again water tank bone dry surely that’s losinh water too quick

steve-5snwi

8,993 posts

100 months

Sunday 17th December 2017
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any signs of leaks ? any staining around the coolant tank ?

lucido grigio

44,044 posts

170 months

Sunday 17th December 2017
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"Losing too quick"

It shouldn't lose any .

Sam1987...

Original Poster:

8 posts

83 months

Sunday 17th December 2017
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No signs of leak but will check for staining tomorrow

Sam1987...

Original Poster:

8 posts

83 months

Monday 18th December 2017
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No that’s what I read so when I had the water pump done should that have stopped me losing water

E-bmw

9,979 posts

159 months

Monday 18th December 2017
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Changing the pump/stat would only stop you losing water if they were the cause of you losing water.

It sounds like you have a case of poor diagnosis going on here.

Perhaps you could tell us the full story from the start so we have a chance of helping.

Sam1987...

Original Poster:

8 posts

83 months

Monday 18th December 2017
quotequote all
It was overheating so took to garage they said it was my thermostat housing so they would do my water pump at same time as it’s easier so pad £350 when it was done he said cuz it’s brand new I need to check my water as it would go down he overfilled my tank with water kept checking it and it was ok obvy I wanted it to go down slightly as it was overfilled it was overheating again water tank was bone dry

E-bmw

9,979 posts

159 months

Monday 18th December 2017
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Have you ever heard of punctuation and sentence construction?

E-bmw

9,979 posts

159 months

Monday 18th December 2017
quotequote all
Unless your thermostat housing was cracked causing water to spray everywhere and therefore losing water level it can't cause overheating.

You need to take it back, punch the mechanic that did the first diagnosis, get your money back & then take it somewhere else.

Sam1987...

Original Poster:

8 posts

83 months

Monday 18th December 2017
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Least of my worries when I was just about to start work

Sam1987...

Original Poster:

8 posts

83 months

Monday 18th December 2017
quotequote all
So what do you think could be the problem with it now then please

DuraAce

4,255 posts

167 months

Monday 18th December 2017
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Headgasket? Radiator pressure cap if you're lucky?

Any signs of water in the oil?
Cooling system pressure test done?
Cylinder leak test done?
If it's not leaking out then the coolant must be going somewhere else...

mike9009

7,595 posts

250 months

Monday 18th December 2017
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Sam1987... said:
It was overheating so took to garage they said it was my thermostat housing so they would do my water pump at same time as it’s easier so pad £350 when it was done he said cuz it’s brand new I need to check my water as it would go down he overfilled my tank with water kept checking it and it was ok obvy I wanted it to go down slightly as it was overfilled it was overheating again water tank was bone dry
I think you are missing the stop in your water system. A full stop should improve things immeasurably. Then I would top up with some Comma fluid.

HTH

Mike

Sam1987...

Original Poster:

8 posts

83 months

Monday 18th December 2017
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Can I find out myself if I have a full stop bearing in mind I’m a women lol

mike9009

7,595 posts

250 months

Monday 18th December 2017
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Hi Sam,

You do not need a full stop bearing. I would take your car to a trusted friend/ colleague/ family member and ask them to take a look for you or take it to a garage for you.

Alternatively, what have the original garage said about the ineffective repair?

If you are loosing that much coolant I would get this looked at sooner rather than later - it has the potential to damage the engine without attention.


Mike

Sam1987...

Original Poster:

8 posts

83 months

Monday 18th December 2017
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It was my husbands Freinds mate who is a mechanin he don’t want anything to do with it as when he done the job he must have accidently unplugged a wire which meant my lights wasn’t working as cuz I pestered him to take a quick look he now wants nothing to do with the car sounds a bit dodgy for my liking but my husband won’t have it to be it’s being taken to a garage on sat as I’m clueless as so is husband Thankyou

steve-5snwi

8,993 posts

100 months

Monday 18th December 2017
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Take a look at the coolant tank, its at the back of the engine bay, radiators also fail on these, both in terms of leaking and blocking up.

sad61t

1,100 posts

217 months

Tuesday 19th December 2017
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As Steve says. The expansion tank design tends to split down the mold seam, it's especially prone to failing on the S model as it's pressurized, but the normal Cooper can fail too. If a stone has hit the radiator, it can hole it, or rot sets in around the base.

Also look under the oil filler cap for a white waxy deposit; this would mean the water was getting into the oil system and indicate a failed head gasket.

If the mechanic didn't bleed air out of the system, it might go down quite a bit as the air moves around. If you refill and it goes down again then you've got a problem. I assume it wasn't dropping quickly prior to the overheating issue and thermostat change?

Keep it topped up until the garage take a look. In this weather use a premix antifreeze (easier to carry in the boot), and avoid tap water as that can cause problems longer term especially in hard water areas.

liamgt4

23 posts

191 months

Friday 23rd March 2018
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Hi,

I have had a similar experience recently with the girlfriends car and plan to fix it next week.

I changed the water pump after finding the leak was around the OS front wheel, but the leak continued.

I have now isolated the cause to be a cracked in the water pipe that runs across the back of the engine linking the thermostat housing and water pump.


steve-5snwi

8,993 posts

100 months

Friday 23rd March 2018
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This one by any chance ? It’s around £120 from bmw