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xray 
Newbie 
Joined: 23-April-2005 Location: Doncaster Status: Offline Points: 15 |
 Topic: wheres my coolant going?Posted: 02-July-2006 at 23:19 |
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Hi folks Coolant water seems to be vanishing from the rad on my E34 2.0L. I'm topping it up daily now but there are no apparant leaks in the system, certainly no puddle of water under the car. Had an over heating incident a few months back when the plastic vent valve beside the filler cap went awol on the motorway, and she blew all her water out of the subsequent hole! I managed to limp her to some nearby services with the needle in the red. She eventually cut out and refused to start again, travelling back home via AA relay. The vanishing water trick seems to have stemmed from this event. Anyone got any ideas on where the water is going??
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Drew540i
Really Senior Member II 
Available from all good newsagents! Joined: 15-August-2005 Location: The Mansfield Massive Status: Offline Points: 632 |
Posted: 02-July-2006 at 23:42 |
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Yes, a cracked head from when you drove it with no
coolant! Just keep putting water in......... |
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fingerman
Really Senior Member II
Joined: 31-May-2005 Location: Stockport Status: Offline Points: 564 |
Posted: 03-July-2006 at 10:23 |
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Hmmm - had a similar issue with my 530 (12v) but never got round to fixing it in the end - although I was pretty sure it needed a new radiator
On a few occasions the temp went in to the red so it was time to put the heaters on full blast to get it down !  - Roasting !!! - rather me than the car ! |
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Current: E34 1996 525tds 113-125k
Previous: 9xE34s, 5xE30s, 2xE39s, 1xE32, 1xE36.... phew! My Ebay bits: http://search.ebay.co.uk/_W0QQsassZseany69ukQQhtZ-1 |
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Doive
Really Senior Member II
Joined: 09-February-2005 Location: Clinging to a turbine, Hexham Status: Offline Points: 1212 |
Posted: 03-July-2006 at 12:26 |
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As Drew says, quite possibly a cracked head from when it boiled. Should be easy enough to pick up a replacement head.
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1987 BMW 525e Lux Auto (sadly deceased)
Get Firefox - Ditch Hopeless Inertnet Exploder www.doive.co.uk 
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540 V8
Bavarian-Board Contributor 
Lick my badge Joined: 07-December-2005 Location: Running the asylum Status: Offline Points: 2280 |
Posted: 03-July-2006 at 15:41 |
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'Ditto the above' Mike |
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Current:E34 540i Touring 6 speed manual(Mpower bodykit & suspension)& Chrysler Voyager 3.3 V6 auto Previous:E34 530iSE AC Schnitzer suspension. E28 525e auto-Standard |
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xray
Newbie
Joined: 23-April-2005 Location: Doncaster Status: Offline Points: 15 |
Posted: 05-July-2006 at 01:13 |
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Thanks for the answers folks. Looks like the head then I've just done a fuel consumption check across the last 1000 miles and got 29 mpg even allowing for the 12% error on speedo/odometer (according to sat nav). I think thats pretty fine for a 11yr old with 160,000 on the clock! So theres not to much wrong with the old girl and she probably deserves a fresh head.
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wheres my coolant going?
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. Oh well, I've got an intermittent tappy valve as well, so maybe a recon head can kill two birds with one stone!