 | Home > Puma (Tdci) > Hole In block |
 
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 6060  
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Are you sure it is not a failed core plug?
Any pics of the hole, and area ? |
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27th Oct 2025 8:23am |
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| Harriec Member Since: 06 Jan 2024 Location: Sussex Posts: 15  
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Hi. No...pretty sure it's not a plug. Had a mechanic I know come and look at it. He's not land rover but ex for mechanic (25yrs) and he thinks it's shot. He also said he's never seen a hole in the side like that. I will try and get some pictures up but it's difficult to see.
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27th Oct 2025 8:50am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 18058 
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Another popular Puma failure that produces a similar effect is when the cap on the unused spigot of the water pump manifold fails. This will cause a huge leak behind the water pump in a location which is really difficult to see and can easily be mistaken for a catastrophic block failure.
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27th Oct 2025 10:32am |
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| Harriec Member Since: 06 Jan 2024 Location: Sussex Posts: 15
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We put a camera down there and you can physically see the coolant coming out of the block. Best I post some pictures for you to see
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27th Oct 2025 11:34am |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 3551
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Does the engine still turn over on the starter?
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27th Oct 2025 1:02pm |
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| Harriec Member Since: 06 Jan 2024 Location: Sussex Posts: 15
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Hi yes. It's still starts and runs absolutely fine....
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27th Oct 2025 1:27pm |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 3551
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Well, it can't be a mechanical failure then, because to make a hole in the block something inside the engine would have to fail catastrophically and then there's no way it would run, or even turn over on the starter.
As above, core plug or blanking plate has failed. The only other thing that could cause it would be the coolant freezing but it's not cold enough for that, and it would only happen if there was no antifreeze in it. Last edited by lightning on 29th Oct 2025 7:25am. Edited 1 time in total |
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27th Oct 2025 1:53pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 18058
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I think we need the promised photos....
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27th Oct 2025 2:17pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 21044
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Could be ineffective, overly watered down coolant, so it’s got vastly reduced cooling and anti freeze capabilities.
Then it will be more likely to boil, expand, under heat or especially expansion during freezing. The latter could have happened some time ago, and heat at a later date built pressure and blew out from there. I’m not saying this is the case, but far to many people out there seem to think that water itself is fine as a coolant just as it is, when it doesn’t have the elements like OAT that keeps things cooled when needed and anti freeze properties to spec. Whilst it has a long life, it still does lose its capability over time to be effective, again it’s often not serviced as it has a long life. It has a very long life, but some people have it at 10+ years old or more. In addition to that, unless you use concentre and distilled water formula or ready mixed, then you can get scale etc in there as well. Though it’s a bit more in price I just went for pre mixed, then you can just go from there and it’s ready to go. Then you can simply concentrate on the drain and bleed proceedure, rather than faffing around mixing the quantity etc. From the bottle from the factory, it is then exactly at the spec it should be as required. Of course there is pre mix vs concentrate, we all choose to do things in various ways based on choice. When I had a coolant leak it was water pump related, with all the components in there you need to trace where it really may be, but you can see coolant witness marks and trace back to source. ____\We|Will|Win/___ ____/🇬🇧🇺🇸\____ _//*⛽️🛢️⚙️🧰*\\_ |
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27th Oct 2025 4:11pm |
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| el sid Member Since: 06 Sep 2025 Location: devon Posts: 31  
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JB weld is good for holes in metal,we filled a massive hole in a David brown tractor block,due to freezing,drove it 25 miles home no problem,then used it short trips on the farm for 2years.
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27th Oct 2025 8:48pm |
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| Harriec Member Since: 06 Jan 2024 Location: Sussex Posts: 15
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Difficult to get a picture. I took a video but can't post it here. . You can see the thin stream of coolant which only comes out when I open the header tank lid ( with engine off)
I have always just the correct coolant in it. I've owned it for 5 yrs. So I can't speak for previous owners I can try and get better pics in the light. But I went to work today in a friend's car and it was dark when I got back. It seems to be a small hole high up on the block, above where the dipstick goes in. Definitely not a freeze plug if any kind. The hole is too small. |
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27th Oct 2025 8:53pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 18058
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Everything you say makes it sound les and less like a hole in the block! Whereabouts is this jet of water, which side, front or back, and how far down?
I suppose that a hole might have corroded through the block but it is unlikely, and there are many things which could be leaking externally. |
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27th Oct 2025 9:43pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3656  
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Had an old Triumph engine that rusted through, just where the exhaust manifold went down with just few mm clearance from the block. The other side of the engine block was like new, protected by the oil leaks. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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27th Oct 2025 11:02pm |
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| Linds Hanson Member Since: 16 Jan 2021 Location: Cornwall Posts: 540
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Just had a customer's block crack on RH drivers side under exh manifold, there are no core plugs on RH side of TDCI. We made a effective seal with K seal whilst the owner saves for a M57 conversion, he's travelled a few thousand trouble free miles since.
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28th Oct 2025 5:39pm |
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