Omega Owners Forum - losing lots of water

angaman

Newbie

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Posts: 5

losing lots of water
03. Sep 2006 at 14:37

Hi Guys
one thing after another!
got the beast up and running fine - tho idling problems. drove 60 miles and it started cutting out when stopped - idle Control Valve? the coolant level warninmg came on.
topped up a pint or so.
drove back and coolant level came on again. got home and water pouring out of passenger side of engine bay and fan buzzing on. too late and dark so looked this morning.
filled up about 6 pints or so and when started had a buzzing from drivers side of engine compartment.
ran on 2000 revs for 5 mins and couldnt see any water leak, but level went down so topped another pint. still no leaking
cant see any water in the oil
any thoughts?
cheers
Rob

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Kev

Omega Knight

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.:The OmegaProject:.

Posts: 1543
Glasgow
Gender: male

Re: losing lots of water
Reply #1 - 03. Sep 2006 at 14:47

Have you checked the hose from the radiator to coolant pipe, that is located at the passenger side, or right bank as you look at the engine. You would only see a major leak there if your stat was opened, i.e. engine at temperature. Undecided

With regard to the buzzing when first started, that will most probably be the pump for the self levelling suspension, if fitted.

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« Last Edit: 03. Sep 2006 at 14:49 by Kev »

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v6man54deg Geffd

Junior Member

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V6 man

Posts: 115
Wirral Merseyside
Gender: male

Drives: 3.0l v6 calibra

Re: losing lots of water
Reply #2 - 03. Sep 2006 at 15:06

usually due to the heater by-passs valve leaking done a few this summer on omega's, should stop if you switch the heater to full.
new valves are around £29 fm vm.angaman wrote on 03. Sep 2006 at 14:37:

Hi Guys
one thing after another!
got the beast up and running fine - tho idling problems. drove 60 miles and it started cutting out when stopped - idle Control Valve? the coolant level warninmg came on.
topped up a pint or so.
drove back and coolant level came on again. got home and water pouring out of passenger side of engine bay and fan buzzing on. too late and dark so looked this morning.
filled up about 6 pints or so and when started had a buzzing from drivers side of engine compartment.
ran on 2000 revs for 5 mins and couldnt see any water leak, but level went down so topped another pint. still no leaking
cant see any water in the oil
any thoughts?
cheers
Rob

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V6 problems solved

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Kev Omega Knight Offline .:The OmegaProject:. Posts: 1543 Glasgow Gender:	Re: losing lots of water Reply #3 - 03. Sep 2006 at 15:08 Would the HBV cause such a drastic loss in coolant so quickly? 6 Pints seemed quite excessive to me.
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Allenm Senior Member Offline Posts: 591 Milton Keynes Gender: Drives: '99 2.5 V6 CDX saloon manual	Re: losing lots of water Reply #4 - 03. Sep 2006 at 15:12 When mine went, it was a total dump of the coolant as soon as I turned the A/C on. If it is that much coolant loss it should be very easy to rule out. Remove the wipers and scuttle which will give you a reasonable view of the HBV, turn the Air Con to LO and see if the coolant is coming out of the HBV. HTH Merv
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: losing lots of water Reply #5 - 03. Sep 2006 at 15:22 HBV would be my guess as well, take off scuttle and check. Sometimes leak when aircon off, sometimes when on. Could also be a split coolant hose (Project TB1 split its hose between coolant bridge and HBV)
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teddog 34 Newbie Offline Posts: 3 Drives: omega 2.0 cd auto est	Re: losing lots of water Reply #6 - 02. Jun 2009 at 18:51 I have same problem, what is the HBV valve
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OmegaGav Intermediate Member Offline For god sake doooo something !!!!! Posts: 277 Hemel Hempstead Gender: Drives: 2000 2.5 V6 CD Estate	Re: losing lots of water Reply #7 - 03. Jun 2009 at 13:34 teddog 34 wrote on 02. Jun 2009 at 18:51: I have same problem, what is the HBV valve HBV = Heater Bypass Valve, a fist sized black unit with four pipes connected to it located behind the Plenum under the scuttle below the windscreen look here on how to replace http://www.omegaowners.com/forum/YaBB.pl?num=1193594464
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