 | Home > Td5 > Coolant leak? |
 
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| ian series 1 Member Since: 17 Nov 2014 Location: south Posts: 3127   
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Under the exhaust manifold towards the front end, is a good start,
Look to see if you have any pink or white marks anywhere? It's common for the Bung to leak there. Other than that, check hoses, and along the bottom and top of the rad, again pink or white stains indicate a leak. Going deeper, could be H/G failure? But check that last! Do the easy stuff first  80" 80" 86" 88" 90"
Wanted, Forward Control Anything considered. |
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18th Nov 2017 9:45am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4385
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As Ian says.
I am just a little further down the road than you. Story: http://www.defender2.net/forum/topic53859.html Page 1 covers the replacement of the threaded bung under the exhaust manifold. For now though I would fill your coolant system up and monitor the level religiously every day (to begin with). Make sure there is clear coolant coming out of the bleed screw on the top hose. Will be getting mine back on Monday, I hope... |
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18th Nov 2017 10:26am |
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| Djcla Member Since: 29 Jul 2017 Location: Gloucestershire Posts: 469
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Can I just top up the coolant , or do I need to flush system first? What type do I need to buy?
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18th Nov 2017 10:42am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4385
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Ideally you would mix up a 50/50 OAT coolant to water and add that to your expansion tank until coolant runs freely out of the bleed screw.
But... ...in a pinch you can fill up with 100% water to get you home. But, you should drain and refill with a 50/50 solution ASAP afterwards. You can pick up OAT coolant from any local parts stores (Euro, Halfords, etc.). Whilst trying to figure out what was wrong with mine I did drive around with 5L of 50/50 mix just to keep the Ol'Girl going whilst problem shooting. |
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18th Nov 2017 12:02pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19525
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Opine Oils has a good range of OAT coolant. I personally use the pre mix, more expensive yes but better performance and less minerals added into the system.
There was around a 1.C temp difference when I swapped mine. Diesels Lives Matter. ⛽️🛢️👨🔧🧰⚙️ And if You Love the Country, then we’re on the same side ~ I got’ love for Britain, I got’ British pride’. 🇬🇧 |
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18th Nov 2017 12:14pm |
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| Djcla Member Since: 29 Jul 2017 Location: Gloucestershire Posts: 469
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How much do I need, not wanting to spend 50 for it to all leak out again lol
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18th Nov 2017 12:19pm |
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| mk1collector Member Since: 17 Sep 2009 Location: West Yorkshire Posts: 6769  
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Try a new coolant bottle cap the seals sometimes go and it's cheap. Only get genuine or oem obviously. Ray
My build thread http://www.defender2.net/forum/topic17615.html |
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18th Nov 2017 12:25pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19525
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Mines a Puma so cannot comment, but the sooner you get it fixed the cheaper it will be as I have previously found.
Also do your best to ensure all spills are contained or cleaned up, as coolant is dealy to animals and wildlife. Diesels Lives Matter. ⛽️🛢️👨🔧🧰⚙️ And if You Love the Country, then we’re on the same side ~ I got’ love for Britain, I got’ British pride’. 🇬🇧 |
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18th Nov 2017 12:26pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19525
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Also as already suggested above check for coolant colour traces.
Check hoses and water pump body and joints, including radiator. I kept thinking it would be a hose or radiator on mine and instead it was the waterpump, dealer tried to lift me of 580 to replace. 
Sorted my own for 150. Diesels Lives Matter. ⛽️🛢️👨🔧🧰⚙️ And if You Love the Country, then we’re on the same side ~ I got’ love for Britain, I got’ British pride’. 🇬🇧 |
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18th Nov 2017 12:32pm |
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| rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2196 
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Other culprits are the heater matrix ( look for fluid/stains at the bottom of the heater box where it bolts onto the passenger footwell) or where the top hose connects to the cylinder head (assuming you dont have A/C there is large alloy casting underneath it which collects a pool of coolant). I replaced my top hose to stop the leak but the outlet on the head was too corroded and undersize so swapped that too to finally stop the leak. Both easy checks to make but you would be best to take the acoustic cover off.
Steve 02' 110 TD5 Double Cab Rebuild Thread 84' 90 3.9 V8 Caged Pickup Build Thread - Now For Sale Mobile Diesel Heater Build Thread |
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18th Nov 2017 12:35pm |
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| ARC99 Member Since: 19 Feb 2013 Location: North Yorkshire Posts: 1831 
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I had the problem of loosing 2" of coolant from the expansion bottle over a 4 week period, this had been happening for about 18 months, I checked all the possible places for sign of a leak an the sign that it was getting past the head gasket all to no avail.
Four weeks ago I called into the local Indy for advice re the noise coming from the Alternator and the possibility of swapping the pulley and the idler, I removed to top half of the radiator /fan cover so he could get a better look , I then found out that a seam in the near side of the Radiator was leaking just enough to run most of the way to the bottom but not enough to run out of the bottom. The Indy says it's not the first time he has seen it so It me be worth having a look. Don't make old people mad. We don't like being old in the first place, so it doesn't take much to  us off.
Richard |
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19th Nov 2017 11:16am |
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| Djcla Member Since: 29 Jul 2017 Location: Gloucestershire Posts: 469
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Thanks my alternator belt is squeeling a lot these days , that's on the list too. I have seen liquid run out / drip below the radiator before I'll take a closer look in case it's coolant next time.
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19th Nov 2017 12:51pm |
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| Djcla Member Since: 29 Jul 2017 Location: Gloucestershire Posts: 469
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ok, i bought the anti freeze red stuff on weekend ready to top up but not got round to it yet. i drove it a few miles this morning to see if the heating works . However i was playing with the fan speed selector set it to the lowest position and i cant feel any air coming out near windscreen or feet either hot or cold . Ive never noticed before because i only bought in the summer and do very few miles so not really tested it .
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20th Nov 2017 11:36am |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 897  
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Is the fan actually blowing but no air coming out? 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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20th Nov 2017 4:14pm |
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