 | Home > Td5 > 2003 TD5 Coolant System over pressurising |
 
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4393  
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g Oh goodness you found me!  thought I was safe here...  good to hear from you Hugh.
Going to be very lean month next month. I have already prep'd the family that they'll be lucky to get a cadburys mini egg this Easter... 
I think I am more annoyed by the theft of me snorkel top... That's just low down n dirty! |
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14th Mar 2017 10:06pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4393
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It would appear there are a good number of you good fellows that have suffered the same fate, perhaps a new support group needs to be set up - the TD5HGF condolence society... Have to say that the ol gal is nearly up to 172k miles and this is really the first big thing to go wrong with the engine, injector looms, manifolds, turbos, fuel heater leaks, fpr leaks and an injector death... So a great engine all in all. The daft thing and perhaps this is the epitome of insanity, I wouldn't change her for the world. i would rather repair and repair the repairs than buy a disposable euro-box... I am inclined to think the core plug is a symptom rather than the cause. So whilst the HG is sorted the plug will be too... Ooo eck I really hope there is nothing else lurking in the shadows... Cracked head etc... Please oh pretty please! Perhaps my vicarly step father would consider calling on some Devine assistance on my behalf. Sure he must have a direct line to him upstairs... |
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14th Mar 2017 10:18pm |
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| CDN38 Member Since: 14 Nov 2014 Location: Courtenay, BC Posts: 729  
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For that core plug, you will need to remove the exhaust manifold to have access. It's unfortunate, but really the only way to do it. Hopefully you don't snap off any studs, that becomes a real chore.
Positive thinking!!!  Click image to enlarge it's a Landrover thing... my renovation thread: http://www.defender2.net/forum/topic40792.html |
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15th Mar 2017 7:17am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5738 
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Also had headgasket failure....New head for me
 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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15th Mar 2017 9:27am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4393
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HI CDN. Always a positive thinker, got to be, too many miserable folks around. Surround yourself with positive people is the only way forward.
Thankfully... I have only just replaced the manifold, studs and turbo. So all should be relatively corrosion free. I suspect though that the entire head is going to have to come off to fix the underlying problem of a HGF due to... plastic dowels?! a higher mileage engine or just bad luck. I will however not be doing this job myself on account of not having anywhere to do this large job and no sensible way of getting the vehicle back to the farm. |
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15th Mar 2017 9:35am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4393
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Oh dear... Cracked I take it? if you do not mind me asking how much did that set you back and from whom did you get it from? |
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15th Mar 2017 9:36am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5738
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Not sure if cracked or not, just know it failed pressure test. Wasn't leaking a huge amount nor pressurising the header tank that I recall, just the water level kept dropping. Some days worse than others for water level.
Tried sniff tests (a couple of and all showed as no fault found) After 4/5 years all is well with the new AMC head. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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15th Mar 2017 9:45am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4393
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Interesting. I too have been having random water level fluctuations over the past 12 months or so. Never found a leak. Perhaps this has been gradually getting worse for some time.
I did have a coolant pressure test 3-4 years ago prior to heading to Gib and that gave the system a clear bill of health. lifes rich tapestry and all that. |
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15th Mar 2017 1:32pm |
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| stigomery Member Since: 10 May 2016 Location: Cambridge Posts: 277 
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I just picked up my bill... ouch!
And I checked, it already had a steel dowel, he was as confused as me as to why the gasket was leaking. Click image to enlarge |
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15th Mar 2017 6:48pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4393
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Just a thought. Could a failing water pump cause over pressurisation of the coolant system??
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15th Mar 2017 9:55pm |
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| CDN38 Member Since: 14 Nov 2014 Location: Courtenay, BC Posts: 729
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Looks like I have been sucked into the vortex... I have been dealing with an issue of no heat. Replaced the thermostat, water pump, and radiator.. still the top of the radiator is hot, and the bottom of of it is cold, the thermostat isn't opening for some reason (or at least there's no flow through it). Explanation seemed to be an air pocket in the cooling system, seemed to make sense.
Latest symptom is the, coolant reservoir is now over pressurized and blowing the reservoir cap. Has to be the head gasket, or head. Last year when I did my restoration and I replaced the core plug, I ran into an issue. After replacing the plug, I checked it by pressure testing the system. No leaks, but the truck sat, pressurized for a couple months. When I went to start it... hydraulic lock up in #1. Removed the glow plug, cleared it out, and life went on as normal. However I knew that the gasket or head has a very small leak, and it would eventually need to be done. So, it's time, the over pressurized blowing reservoir cap tells the story, but I'm still confused as to the no heat issue. What is stopping the coolant flow? If anyone has experienced their before.... let me know. it's a Landrover thing... my renovation thread: http://www.defender2.net/forum/topic40792.html |
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18th Mar 2017 6:52am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5738
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Hows the head/coolant situation? 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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23rd Mar 2017 5:39pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4393
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Update: soooo I have had quite a bit done to the ol Fender this past week or so. Call it amassing age related issues...
After the coolant explosions I dropped it off at my local Indy as I do not have the space time or my tools with me at the moment. Upon talking to the owner, whom I have known for donkeys and trust to give me a direct answer, even if I don't want to hear it.. he did not think the coolant explosion was the head, but the water pump seizing during hard (hot) driving, causing the coolant to overheat, pressure increases and Kah-boom... I thought that was a possible explanation as both times the coolant blew I was pushing quite hard and the Inbetween times driving nice and gentle like with no problems at all. So worth a try...
They took the water pump off and replaced it with one I have carried as a spare for a few years. Noticed the pas pump dog drive was gnarled up so replaced that as well and a pas pipe that had perished badly and put a new pas box on as well... Steering is awesome again, if a little heavy, hoping things just need to bed in a bit. The coolant side of things looks good too, temp sitting just left of vertical which it hasn't done for a good number of years. Wonder if this has been slowly coming on. Only issue is that the block drain plug that I asked them to repair they failed to do, which is entirely irritating and now I will have to revisit doing it myself as it is weeping quite badly. So hoping that is the only reason the coolant is going down. Job for Easter... Does anyone know if there is a seal associated with the drain plug, cannot see one in my parts book or is it just the threads that seal the hole? |
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30th Mar 2017 8:17pm |
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| CDN38 Member Since: 14 Nov 2014 Location: Courtenay, BC Posts: 729
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New head is en-route from Turner, due to arrive on Monday. Basically, as soon as the engine starts to warm up, it's pressurizing the coolant tank. Not driving it any more than a few minutes to the store or work. (basically before the temp starts to go up). it's a Landrover thing...
my renovation thread: http://www.defender2.net/forum/topic40792.html |
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30th Mar 2017 8:22pm |
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