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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1841  
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Jon, that's not the block itself but a big "bracket" onto which the alternator, water pump and power steering pump are mounted. Even then, I don't think it's cracked, I think it's a trick of the light with the flash.
Google 300tdi auxiliary bracket and the images will show you. Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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2nd Sep 2019 9:28pm |
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| JonJop Member Since: 23 Jan 2018 Location: St Agnes Posts: 63  
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Thank you - was starting to think the water leak was the least of my worries!!
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2nd Sep 2019 9:36pm |
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| Balvaig Member Since: 19 Feb 2016 Location: Fife Posts: 730  
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The p gasket tends to weep. If water is pouring out then I would still first suspect a split hose, then a fractured water pump and finally a crack in the block. You should be able to see a major leak like this. Try drying everything out before refilling.
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7th Sep 2019 7:14pm |
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| JonJop Member Since: 23 Jan 2018 Location: St Agnes Posts: 63
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Thanks very much. The hoses are definitely fine. I’ll order a new pump on Monday and will swap it out and report back.
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7th Sep 2019 7:16pm |
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| Balvaig Member Since: 19 Feb 2016 Location: Fife Posts: 730
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The other possibility is a corroded and ruptured core plug. More likely than than a cracked block. I didn’t think of it because they are more likely to rupture in freezing weather with no or weak antifreeze.
Not had one go on this engine so cannot tell you where they are but they will be on the block. |
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7th Sep 2019 7:59pm |
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| JonJop Member Since: 23 Jan 2018 Location: St Agnes Posts: 63
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Thank you. I’ll try and locate it. The water is definitely coming from the direction of the water pump so there is a very good chance that the water pump and/or gasket is causing the problem.
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7th Sep 2019 8:40pm |
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| JonJop Member Since: 23 Jan 2018 Location: St Agnes Posts: 63
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Took the belt off this morning and can immediately see the problem. The top pulley wheel is very loose and the water pours from there. Looks like a bearing has gone so it’s definitely the water pump.
I’ve taken the self adjuster off and the top pulley but the lower pulley on the water pump is very tight. I’ll give the nuts a spray with duck oil in hope they will loosen up as I don’t want to break one off! |
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8th Sep 2019 11:17am |
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| jfh Member Since: 08 Jan 2014 Location: West Coast Posts: 358  
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Put the belt back on. It will create more friction to help loosen the belt.
Also the angle at which you put the spanner determines the leverage on the bolt or the pulley. |
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8th Sep 2019 11:22am |
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| JonJop Member Since: 23 Jan 2018 Location: St Agnes Posts: 63
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Sorry should have said, top pulley, tensioner and belt are back on but two of the 3 bits on the lower pulley are still locked solid.
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8th Sep 2019 11:45am |
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| JonJop Member Since: 23 Jan 2018 Location: St Agnes Posts: 63
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Two of the bottom three bits are now off but the third and final but has rounded off!!! Any top tips for getting it off? Has anyone used the Irwin tools for removing rounded heads?
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8th Sep 2019 1:11pm |
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| JonJop Member Since: 23 Jan 2018 Location: St Agnes Posts: 63
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Just a short note to say thanks for the advice. I changed the water pump, belt and tensioner today and the old girl is back on the road. After I managed to get the final bolt out the PAS pump pulley the job was a piece of cake.
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10th Sep 2019 5:44pm |
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| jfh Member Since: 08 Jan 2014 Location: West Coast Posts: 358
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Glad you managed to fix her.
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10th Sep 2019 5:53pm |
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| Balvaig Member Since: 19 Feb 2016 Location: Fife Posts: 730
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10th Sep 2019 8:36pm |
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| Zed Member Since: 07 Oct 2017 Location: In the woods Posts: 3287 
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Glad you got it sorted.
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10th Sep 2019 8:54pm |
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