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[Nick W]

Thanks but the clips aren't the problem, it's the hoses themselves that won't come off due to lack of access.

that's common for rubber hoses that have been in place for years. You need to break their grip on the HBV by twisting in opposite directions. There isn't really room to use a blunt tool to help with this, unlike on a radiator hose. Don't fiddle with the bulkhead connections, as they're even worse to deal with.


I remove the scuttle to do this job but leave the wipers and plenum in place, removing either isn't worth the extra effort.


Take a couple of MTFU pills, and get on with it

[rds]

Thanks again that was hard to do on the first because they all resisted force. Managed to get top hose (ie top one of the vertical pair) off using hose pick to free joint. The opposite lower hose needed a crow bar from below) I kid you not) to be eased off and the lower hose of the vertical pair just span on spigot until edged off with lever, both last hoses only possible from below.

I considered freeing hoses at other ends but that was going to involve more risk.

Having a rest now to regroup for the next assault....

[rds]

Cheers Nick re bulkhead union advice. I didn't fancy that...

I'll have to see if those pills are on the NHS....

Is there no retro fit better solution for this rotten job? Copper pipe extensions to pick up on new sections of hose to bring the valve further up into engine bay?

[Doctor Gollum]

A chap in the US did such a mod, but you have really overegged an fiddly, but simple job

[rds]

Easy enough to say from afar but no I've not over egged at all, it us just very fiddly which makes the job rotten. The Sticktion of the rubber joints was too great for the space available. My hands look like prize fighters'.

It IS easier from below.

All back together again and FWIW the lower windscreen trim sits behind the sloping windscreen trim at the edges but the channel on the lower windscreen trim may not go far enough along the bottom of the screen unless the little extra flange below the far edges of the screen are eased back a little.

Let's see how long this OEM valve lasts...

Thanks for all the help.

[Doctor Gollum]

Done at least 9 of them including 3? Desmonds, all from above and none by removing the scuttle

You got there in the end though... 

They are a basic Omega item, on the list of common Omega afflictions along with crank sensors, wishbone bushes, lock motors and cam cover leaks... Keep an Omega more than a year or two and you can pretty much guarantee to do everything on that list at least once.

[rds]

Yes, thanks to the help and encouragement.

I agree, I've had at least one each of all those. However it's still a better and easier car to work on than most of the modern stuff so I want to keep it going.

Now, any ideas on this: whilst underneath and running engine to check for leaks, every 10 seconds there was a distinct "chirp". Thought it was a bird at first...but what is it? Seems to come from cat area.

[YZ250]

....
Now, any ideas on this: whilst underneath and running engine to check for leaks, every 10 seconds there was a distinct "chirp". Thought it was a bird at first...but what is it? Seems to come from cat area.

You haven't still got a powersounder fitted by any chance have you. 

[Doctor Gollum]

....
Now, any ideas on this: whilst underneath and running engine to check for leaks, every 10 seconds there was a distinct "chirp". Thought it was a bird at first...but what is it? Seems to come from cat area.

You haven't still got a powersounder fitted by any chance have you. 

That would be a waste of the weekend 

As above, remove it.

[Nick W]

Cheers Nick re bulkhead union advice. I didn't fancy that...

I'll have to see if those pills are on the NHS....

Is there no retro fit better solution for this rotten job? Copper pipe extensions to pick up on new sections of hose to bring the valve further up into engine bay?

pointless for a part that might need to be changed twice in 25 years. Easy 30 minute job if you have a supply of the pills..........

[rds]

The pills are only concentrated stake and kidney pudding anyway and I had plenty. The valve is changed but I still think it can be improved. There was mention of someone in US who has done it so will try to track that down.

Chirp not coming from sounder but from under car.

[henryd]

How big are your hands?

I have honestly never removed a scuttle to replace an HBV. Putting it back on the ground will make everything alot easier to reach...  ....

But it takes 15 mins to remove the scuttle ..... surely that's 15 mins spent well to give you un-hindered access 

No point on the Desmond. On the V6, it takes 30 seconds to unbolt the plenum

If I ever do another hbv I'll remember .... 

I somehow doubt it

[Andy B]

...

I somehow doubt it

So do I 

[rds]

Just to be clear, as the OP, I will do it again if necessary! Longer hose picks will be used though to get round the sticktion that I mentioned.