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[ianboyo]

hello i have a omega 2.5 s reg have a water leak back of engine has anyone have some idea what it could be possibly the Heater valve  any help would be greatful thanks  

[JamesV6CDX]

HBV is a likely candidate...

[ianboyo]

thanks james thought it might be that, do they generaly pack up then ?would that coase a water leak.

[Richie London]

thanks james thought it might be that, do they generaly pack up then ?would that coase a water leak.

mine did, didnt know it was leaking till had a good look round. bstrd of a job i thought, cut me hands to pieces changing it

[albitz]

Very common problem. not expensive (around £30 iirc). a bit fiddly to get at but no technical knowledge or special tools required.
I,m sure there is a guide in the relevant section.

[TheBoy]

There are a few things that can cause it, but HBV is most common.

[Bandit127]

It was a HBV on mine. Used to come up with a coolant level warning about twice a week.

I lived with it for a while. You can carry pre-mixed 50% coolant. But if you're a bit lazy like me you could alternate top ups between neat water and neat antifreeze. Either way, you must keep whats in the system at a 50% mix.

If it is HBV, it could well be dripping on your DIS pack which could get expensive and a difficult job to do.

It's a tricky job purely because it's an arse to get to.

There's a guide in the maintenance section...