Cooper S - Coolant Leak! - MINI Cooper Forum

Second Generation Faults & Fixes MINI faults and fixes Late 2006 - Present

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post #1 of 5 (permalink) Old Dec 30th, 2014, 06:21 PM Thread Starter
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England Cooper S - Coolant Leak!

Hi All,

Finally taken the time to join the mini forum after having Mini's for around 3 years now. Reason I hadn't joined is I haven't had a problem up until now (amazing, I know!).

Around two weeks ago I noticed I was having to fill up my coolant every 4 days or so - this evening I parked up and immediately noticed a small puddle underneath the front of the car. I have attached where the coolant was coming from and a picture of the car (read people ask for this ).

Would appreciate it if someone has got an estimate on price, worse case and best case scenario.

Thanks
Jack

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post #2 of 5 (permalink) Old Dec 31st, 2014, 10:28 AM
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Sorry, but the photo of the underside of the engine doesn't really help much in identifying where your coolant is leaking from. You also appear to have a 2008 MCS?

If you run the engine up to full temperature and then turn it off, looking underneath the bonnet and underneath the car you should be able to see where the coolant is leaking, but bear in mind that it might be high up on the engine rather than at the bottom. Also parts of the engine might be very HOT so be careful when feeling around under the bonnet, and beware of the radiator fan which can come on!

Try to inspect the radiator (the coolant would normally drip of the bottom of the radiator if it is leaking). Inspect all the water hoses....especially near to the hose clips. Inspect the header tank (they can split around the join) and also the header tank pressure cap for signs of it blowing out coolant. The thermostat housing is also another possibility for a leak. You should also check inside the car underneath and around the heater for leaks which may not be obvious because the coolant would be soaked up by the carpet etc.

If you discover nothing I guess you will have to book the car into a local independent workshop or Mini specialist for a coolant system pressure test.

Worst case scenario you might have a slight cylinderhead gasket leak, or else a radiator or thermostat housing leak.....these are probably the most costly problems to fix..

Apart from the cylinderhead gasket, most of the other jobs are possible DIY's but a certain amount of disassembly might be necessary. It's worth getting the Haynes Manual if you are going DIY.

Good luck, lets hope its just a hose or the header tank pressure cap.


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post #3 of 5 (permalink) Old Dec 31st, 2014, 02:53 PM Thread Starter
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Hi,

Just taken the airbox off to take a closer look at the hoses without any luck apart from 1 hose which was slightly 'corroded' (pictured)... I also noticed some coolant below the air intake around some of the hoses however no split/leak was found.

What is interesting is that I went for a drive up the road (quiet road), when I reached the top I stopped and checked the coolant, it ALL went. Going back down the road I found all of my coolant in about a 5 meter line (doing 30 ish). Any thoughts on this?

I also noticed on the header tank the tap looking thing (centre of picture) going into the front of the car (perhaps the radiator) seal was broken?

Will book into Mini specialist on Monday.

Thanks
Jack
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post #4 of 5 (permalink) Old Mar 17th, 2016, 06:56 PM
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what is solution of these problem?

i have the same
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post #5 of 5 (permalink) Old Mar 17th, 2016, 10:34 PM
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Quote:
Originally Posted by damianosl View Post
what is solution of these problem?

i have the same
The solution is to have it repaired I would imagine
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