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[MutantCav]

Sorry the hole I was in fact thinking about is on the top of the plenum, where the little breather box plugs in...cant see n o ring on the spare plenum...or would it be in the breather box itself?

[MutantCav]

Right yes, thanks Debs Picture does indeed help...ok I will have to take the breather box off tomorrow and see what I can see I have a feeling though I snapped the original breather box so had to put a replacement on anyway, wouldnt have thought there is that much chance both had dud o rings, but you never know...and I could be wrong in my thoughts there

[perfferle]

Follow the link from Debs. This takes you to the service to clean the breather box. The 'cage' O'ring mounts to the plastic projection beneath the breather box and seals inside the hole at the top of the plenum. The O'ring is not just an O'ring as it has an additional piece fabricated into the rubber that seals the breather box projection piece. Check it out .

Cheers,
P.

[Debs.]

Sorry the hole I was in fact thinking about is on the top of the plenum, where the little breather box plugs in...cant see n o ring on the spare plenum...or would it be in the breather box itself?

Aren`t we talking about the same thing?  
That hole in the aluminium plenum is where the o ring seals alright, but it is held (captive) on/around the short/ circular perforated protrusion beneath the black-plastic breather box....I guess if your not seeing it, t`aint there!  

Sorry....my slow typing meant you`d answered already.  

[MutantCav]

Just been looking at the aluminium plenum that I took off the car...cant look at the breather box itself till the morning when I can see...but at least I know where I'm looking now and replacement cost if its missing is at least peanuts which is good news

[Richie London]

ive been studying this thread with great detail, as i have to do mine at the weekend, it all sounds so simple, it looks simple, just hope it is lol. you lot do give people great confidence to carry out repairs on your own car.

richie

[MutantCav]

Well Richie, I have never done it before and was pretty much just winging it when I swapped the plenum over for a replacement and everything was simple enough...just make sure you partly/totally undo the throttle body to remove the breather box without breaking it...

[perfferle]

Hi guys,

Just wait till you try replacing the spark plugs or worse - rocker gaskets!

Last Saturday I thought I'd replace spark plugs and it was like surgery - all the while hoping to hell that I did not forget to put back anything!

These engines although quite hardy, seem to have been designed for 'install and forget' duty !

Regards,
P.

[MutantCav]

Ok got the plenum loosened and the throttle body off, and the breather box off...andfound the caged O ring thing...not perfect as its not complete...so I need a new one anyway...seems there is a Vaux dealer in Gainsborough so hopefully I can get the parts from there

[MutantCav]

Only a small dealership and they dont have the parts in stock so will have to wait until Wednesday to get them but we shall see then...although getting a car to scrap this weekend so may be able to get the bits off there just to test it

[Marks DTM Calib]

Put plenty of grease around the seal when you fit it so it doesn't tear on insertion.

[MutantCav]

Thanks for the tip Mark...any particular kind of grease? When are you free to help Mark? Can get over there pretty much any time next week but I gues it makes sense to wait until after wednesday to see how the new o rings go with sorting out the running issues...although I'm wondering if maybe its leads or dispack causing the main issue

[Debs.]

The weather is good this morning (the quiet before the storm no-doubt) so I`m going to fit that caged o-ring to the breather/manifold spigot....no probs. with that job.....but,

There`s an 8/10mm. dia. hose which goes from the black plastic breather bridge to the aluminium breather box (at rear of O/S cylinder bank)....that hose is stuck fast to the aluminium breather nipple (the one with the small orifice); `any ideas on how to pull off the stubborn hose (without doing damage) so I can clean the breather-box orifice?

[Big_Roger]

Hi Debs,
I couldn't get the hose off mine either. Eventuall pulled and twisted that hard that it snapped off. I just made a slit in the piece left on to release it.
There is enough slack in the hose to trim it and refit. I used a smear of silicone grease when I put it back.

Don't forget, the hole in the breather box is only about 1.3mm

Roger

[Debs.]

Hi Debs,
I couldn't get the hose off mine either. Eventuall pulled and twisted that hard that it snapped off. I just made a slit in the piece left on to release it.
There is enough slack in the hose to trim it and refit. I used a smear of silicone grease when I put it back.

Don't forget, the hole in the breather box is only about 1.3mm

Roger

Brill!...thanks Roger, I`ve (really) pulled and twisted the hose as you advised and it`s come-free; thankfully, without snapping  
As I suspected the breather orifice is completely blocked; poking a variety of gauge wires into it hasn`t made any progress, so I will run a  1.25mm. drill bit (running-slowly in a flex-shaft chuck) through it to clear.....the breather-hose is also blocked, so carb-cleaner and a 'rodding' through for that too!  

The job is the Omega`s equivalent of using 'Vicks'; `able to breathe more easily afterwards.  
Thanks,
Debs.