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12th September 2023, 19:12 | #1 |
This is my second home
Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008
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Like Trikey says, look at the bottom of the header tank, with the cap off. You will see some ‘fins’ at the bottom. The water should just be above the bottom of the fins. The bottom, NOT at the top of the fins.
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13th September 2023, 07:13 | #2 | |
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Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Coolant level: clarification
Quote:
Tenesmus; you've indicated that your expansion tank is empty. You need to fill it to the MAX marker and urgently investigate the reason for the coolant loss. Begin by checking inside the 'V'. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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13th September 2023, 23:12 | #3 |
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Rover 75 Tourer Join Date: Nov 2014
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Thanks chaps. I haven't had a chance to do anything except top it up to just above the MIN (didn't take much) and put the container in the boot.
I'll be disappointed if it's the thermostat (assuming that's why you mentioned checking in the V), it's already been replaced twice.
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2005 Connoisseur 2.5 auto SE Tourer in BRG with Sandstone Beige and Black piping interior (the 2nd of only 7 Rover 75s produced 5th November 2004, and it’s the 244th of 303 facelift British Racing Green 75 tourers built worldwide). All I've done is add Rover walnut gear knob and handbrake... 2016 Vauxhall Viva SL (Father Jack) "assisted manual" (auto) in purple. Going rusty underneath already... |
14th September 2023, 16:52 | #4 | |
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Quote:
I had one replaced in 2016, the next in 2020, now it'll be another. Fortunately they are pretty cheap.
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2005 Connoisseur 2.5 auto SE Tourer in BRG with Sandstone Beige and Black piping interior (the 2nd of only 7 Rover 75s produced 5th November 2004, and it’s the 244th of 303 facelift British Racing Green 75 tourers built worldwide). All I've done is add Rover walnut gear knob and handbrake... 2016 Vauxhall Viva SL (Father Jack) "assisted manual" (auto) in purple. Going rusty underneath already... |
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14th September 2023, 19:21 | #5 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
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Quote:
The leak is due to flattened 'O' rings, nothing more, so don't waste your money on a third new thermostat. Just buy four official X-Part 'O' rings* (CDU 3858) from E Car Parts Ltd. Fit these to your existing pipework and after final assembly the two serrated clips on the straight pipe must be moved fully outwards within their grooves. This operation ensures that the three plastic components are held rigidly and your 'O' rings will no longer flatten. My engine has now been leak-free for six years following my discovery that this is the reason for the coolant loss. * I have measured 'O' rings from some other suppliers and found them to be out of specification so it's not worth taking the risk. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 14th September 2023 at 19:23.. |
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14th September 2023, 22:45 | #6 |
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Cool. How easy is it to see if the housing itself is leaking or not? Note I'll be handing it over to my friendly garage to do the work whichever it is, along with some other stuff.
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2005 Connoisseur 2.5 auto SE Tourer in BRG with Sandstone Beige and Black piping interior (the 2nd of only 7 Rover 75s produced 5th November 2004, and it’s the 244th of 303 facelift British Racing Green 75 tourers built worldwide). All I've done is add Rover walnut gear knob and handbrake... 2016 Vauxhall Viva SL (Father Jack) "assisted manual" (auto) in purple. Going rusty underneath already... |
15th September 2023, 07:48 | #7 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
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Thanks: 1,587
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Quote:
That can't be proved visually. If there are dried antifreeze deposits around the seam then you'll be told that it's leaking. In fact, it will be the 'O' ring which has flattened causing pressurised coolant to spray upwards and hit the seam; Q.E.D! But the crucial operation is the setting of the serrated clips as I've described. This obviously wasn't done on the last two occasions. You'll need to advise your garage accordingly this time. Good luck. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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