Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: angaman on 03 September 2006, 14:37:35

Title: losing lots of water
Post by: angaman on 03 September 2006, 14:37:35

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

Title: Re: losing lots of water
Post by: Kev on 03 September 2006, 14:47:03

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.  :-/

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

Title: Re: losing lots of water
Post by: v6man54deg              Geffd on 03 September 2006, 15:06:29

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.

Quote

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

Title: Re: losing lots of water
Post by: Kev on 03 September 2006, 15:08:55

Would the HBV cause such a drastic loss in coolant so quickly?

6 Pints seemed quite excessive to me.  :-/

Title: Re: losing lots of water
Post by: Allenm on 03 September 2006, 15:12:24

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

Title: Re: losing lots of water
Post by: TheBoy on 03 September 2006, 15:22:45

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)

Title: Re: losing lots of water
Post by: teddog 34 on 02 June 2009, 18:51:06

I have same problem, what is the HBV valve

Title: Re: losing lots of water
Post by: OmegaGav on 03 June 2009, 13:34:02

Quote

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  :y :y