Coolant leak - re-filled and no leaks since?

Dan_Somerset · 16th October 2015, 11:05

Just after some ideas of what the problem could be or reassurance!

Noticed the other day that I had three large wet patches under the car which I believe to be Coolant (took about 3/4 days to dry out), expansion tank appeared empty have since refilled it as per Haynes manual and it is holding at maximum and no leaks since, have used the car for a number of short trips and the levels appear to be ok, no need for a top up.

I need to use the car this weekend and will be doing about 250 miles do you think its safe to use?

forgot to add - I couldn't find the leak anywhere after inspecting the engine and all clips and hoses look good.

Ste.Sales · 16th October 2015, 11:48

Possibly an air lock in the cooling system causing coolant to be ejected from the expansion cap? Refilling and bleeding would have resolved the issue.. Are there any signs of where the coolant could have leaked from? Pink/blue/white deposites around connections/pipework/expansion tank?
Could be a leaky inlet manifold gasket?

murphyv310 · 16th October 2015, 11:53

Hi.
Check in the "V" of the engine for coolant, its easier if you remove the acoustic damping cover over the manifolds.
Coolant in this area points to a cracked thermostat or leaking "O" rings. If so I wouldn't risk a long journey.

Dan_Somerset · 16th October 2015, 12:32

Quote:

Originally Posted by murphyv310

Hi.
Check in the "V" of the engine for coolant, its easier if you remove the acoustic damping cover over the manifolds.
Coolant in this area points to a cracked thermostat or leaking "O" rings. If so I wouldn't risk a long journey.

No sign of any leaks as far as I can see, and the V looks dry and unstained.

The engine does sound like its tapping (only noticeable with the bonnet up) but I understand that isn't unusual.

iandux · 16th October 2015, 13:17

Could it be from the air-con?

Puzzled the heck out of me at first.

The Rovering Member · 16th October 2015, 16:12

Those aircon drains can put out a respectable amount of condensation & can look a bit un-nerving if you don't know about them.

gritbox · 16th October 2015, 16:53

ive got a leak too I think

where are the common places to check?

take the plastic cover off the engine?

Discofan · 16th October 2015, 16:59

Quote:

Originally Posted by The Rovering Member

Those aircon drains can put out a respectable amount of condensation & can look a bit un-nerving if you don't know about them.

True, Sierras used to look as if the radiators had burst their A/C put out so much water, but the header tank needed topped up so it must have gone somewhere!

Avulon · 16th October 2015, 18:10

Have you checked your plenum drains? A full plenum of rainwater slowly draining could possibly give a similar effect - I.e. puddles under the car taking time to dry out (cause they are constantly being added to).

If you don't know about the plenum drain then check out the sticky:

http://www.the75andztclub.co.uk/foru...t=plenum+drain

Dragrad · 17th October 2015, 00:53

Thread moved to a more appropriate forum. Re-direct left in old. This may be the better forum as threads get ‘lost’ very quickly in the General Forum.

16th October 2015, 11:05	#1
Dan_Somerset Avid contributor 75 Saloon, 2.5 V6 Auto Conn Join Date: Mar 2015 Location: Taunton Posts: 106 Thanks: 6 Thanked 11 Times in 9 Posts	Coolant leak - re-filled and no leaks since? Just after some ideas of what the problem could be or reassurance! Noticed the other day that I had three large wet patches under the car which I believe to be Coolant (took about 3/4 days to dry out), expansion tank appeared empty have since refilled it as per Haynes manual and it is holding at maximum and no leaks since, have used the car for a number of short trips and the levels appear to be ok, no need for a top up. I need to use the car this weekend and will be doing about 250 miles do you think its safe to use? forgot to add - I couldn't find the leak anywhere after inspecting the engine and all clips and hoses look good. Last edited by Dan_Somerset; 16th October 2015 at 11:12..

16th October 2015, 11:53	#3
murphyv310 This is my second home Hyundai i10 998cc Join Date: Mar 2012 Location: Kilmarnock Posts: 6,602 Thanks: 2,088 Thanked 2,298 Times in 1,349 Posts	Hi. Check in the "V" of the engine for coolant, its easier if you remove the acoustic damping cover over the manifolds. Coolant in this area points to a cracked thermostat or leaking "O" rings. If so I wouldn't risk a long journey. __________________ Cheers from Trevor MM0KJJ

16th October 2015, 13:17	#5
iandux Loves to post At last....75 Facelift Connie Join Date: Aug 2013 Location: Longridge Posts: 443 Thanks: 199 Thanked 117 Times in 70 Posts	Could it be from the air-con? Puzzled the heck out of me at first. __________________ A man is not a failure if he falls.....only if he refuses to get up again. This vehicle was the 96,129th 75 to run off the production line, out of 112,381 This vehicle was the 2,123rd 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 394th 75 in Firefrost Red (code: CEV) to be made out of 2,089 Firefrost Red 75s

16th October 2015, 16:12	#6
The Rovering Member I really should get out more....... Rover 75 saloon Join Date: Feb 2014 Location: London Posts: 2,960 Thanks: 263 Thanked 538 Times in 431 Posts	Those aircon drains can put out a respectable amount of condensation & can look a bit un-nerving if you don't know about them. __________________ Reducing the size of my Rover fleet by adding a 75 to it.

16th October 2015, 18:10	#9
Avulon This is my second home 1.8t Tourer Join Date: Oct 2011 Location: Tanelorn Posts: 4,830 Thanks: 956 Thanked 1,148 Times in 916 Posts	Have you checked your plenum drains? A full plenum of rainwater slowly draining could possibly give a similar effect - I.e. puddles under the car taking time to dry out (cause they are constantly being added to). If you don't know about the plenum drain then check out the sticky: http://www.the75andztclub.co.uk/foru...t=plenum+drain __________________ Need a T4 ?: T4 Owners Map thanks to Stevestrat ( use at your own risk) Where?: https://en.wikipedia.org/wiki/Tanelorn Mods/Retrofits: PCV vortex 'filter'; bluetooth; inline thermostat; reversing sensors; plenum spyhole ; headlamp washers ; Diy mp3 player replacing CD multichanger; FBH with remote; Headlamp washers; black/chrome front grille, rear blind; Xenon projectors To do: puddle lights; 2 Din cd/nav to fit; boot release button

16th October 2015, 11:48	#2
Ste.Sales Avid contributor Rover 75 Saloon Join Date: Jan 2015 Location: Preston Posts: 233 Thanks: 9 Thanked 37 Times in 35 Posts	Possibly an air lock in the cooling system causing coolant to be ejected from the expansion cap? Refilling and bleeding would have resolved the issue.. Are there any signs of where the coolant could have leaked from? Pink/blue/white deposites around connections/pipework/expansion tank? Could be a leaky inlet manifold gasket?

16th October 2015, 16:53	#7
gritbox Loves to post MG ZT 190 Join Date: Aug 2014 Location: Glasgow Posts: 497 Thanks: 25 Thanked 36 Times in 24 Posts	ive got a leak too I think where are the common places to check? take the plastic cover off the engine?

17th October 2015, 00:53	#10
Dragrad This is my second home *None DROWNED** Join Date: Aug 2007 Location: Cardigan Posts: 33,339 Thanks: 1,257 Thanked 1,664 Times in 1,081 Posts	Thread moved to a more appropriate forum. Re-direct left in old. This may be the better forum as threads get ‘lost’ very quickly in the General Forum. __________________ Andrew Ich Dien Problem solving is... lateral thinking SEARCH FIRST ...ASK LATER...