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[mark c]

Hello. Just joined the forum and finding it very helpful. Only had an Omega 2 Weeks but enjoying it. Have a 2.5 V6. Just having a few problems. After about 15 mins i loose about half a litre of coolant from the back of the engine. Could this be the HBV. If it is, i have had lots of different stories about changing it. Has anybody got any advise.
Also when you start up and drive there is a whirring noise. When you take your foot off the throttle it stops.
There also seems to be brown blobs in the water. Does it just need a coolant flush or is it something more sinister.
Any help would be appreciated.

[Bo Bo]

Hello & welcome  
Post you're questions in the General Help section, you'll get a better response there  

[DaveL]

Hello & welcome  Mark c  
 8-)
DaveL

[Timbuk]

Welcome to the site and it does sound like your HBV

[Auto Addict]

Welcome to the forum

As said, repost your water leak problem under the 'General Help' section, you will get a better response.

[Elite Pete]

Hi Mark and welcome to the forum

[TheBoy]

Welcome.

Sounds like HBV.

Flush the coolant a couple of times, then keep eye on coolant - you may have the start of an oil cooler failure (fix before get too bad). It may be the aftermath of oil cooler failure already sorted.

[mark c]

Thanks. If it is the hbv where does the water actually come from. One of the pipes or the plastic valve itself. :-/. Have took the wipers off and scuttle and can access hbv but want to make sure it is that before i start to change it.

[Andy B]

Thanks. If it is the hbv where does the water actually come from. One of the pipes or the plastic valve itself. :-/. Have took the wipers off and scuttle and can access hbv but want to make sure it is that before i start to change it.

Mine had traces of blue coolant from the valve itself.

[Timbuk]

Mine had water marks on the valve itself, but it could be leaking and showing no signs at all :-/

[wakeyomega]

Hi Mark
As a newbie myself of just 3 days I can hopefully help, as my task on Saturday was to change the HBV. I couldn't actually tell where on the valve it was leaking, so I did a reverse diagnosis and put a small mirror inder the pipes and valve and convinced myself that the pipes were intact so therefore it had to be the valve. later it became apparant that this is a common fault (Leaky HBV).
You will also find plenty of experience of being able to change it without taking the intake plenum off, and I can confirm it, although do agree with one member who said you do need a box of plasters and a swear box. What I found invaluable was a £7 pair of heater hose clip pliers from halfords.

Oh - and it may help if you unclip the valve to get a better look, it sits on a vertical metal strip (a bit like an old bicycle light fitted on the front of a bike). If you lift it up, off the metal strip, you can then pull it a bit further over to the drivers side for inspection & removal

Good luck
Pat

[TheBoy]

Hi Mark
As a newbie myself of just 3 days I can hopefully help, as my task on Saturday was to change the HBV. I couldn't actually tell where on the valve it was leaking, so I did a reverse diagnosis and put a small mirror inder the pipes and valve and convinced myself that the pipes were intact so therefore it had to be the valve. later it became apparant that this is a common fault (Leaky HBV).
You will also find plenty of experience of being able to change it without taking the intake plenum off, and I can confirm it, although do agree with one member who said you do need a box of plasters and a swear box. What I found invaluable was a £7 pair of heater hose clip pliers from halfords.

Oh - and it may help if you unclip the valve to get a better look, it sits on a vertical metal strip (a bit like an old bicycle light fitted on the front of a bike). If you lift it up, off the metal strip, you can then pull it a bit further over to the drivers side for inspection & removal

Good luck
Pat

All good advice and comments

Shame you didn't take pictures - you could have written a Maintenence Guide for it

[mark c]

 :yThanks for the advise. I will let you know of the outcome.

Also i have lost the lights on the dashboard, speedo and rev counter etc.

Is this an easy job to change the bulbs. :-?