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[perfferle]

Hi Guys,

Just a note to let you know that the plenum O'rings (base of plenum to inlet) are available as a pack/kit of 6 O'rings Part# 9118135 from Vx for £ 11.55 List plus VAT .

Regards,
P.

[perfferle]

Hey Chris,

It may be a good idea to get the breatrher box O'rings as suggested by B/Roger and also plan for a set of 6 Plenum O'rings, get some carb spray and strip plenum, Clean Idle Control Valve, throttle body and re-assemble with all new O'rings fitted - This will at least eliminate any potential vacuum leaks on Plenum area .

Regards,
P.

[Phil]

Hi Guys,

Just a note to let you know that the plenum O'rings (base of plenum to inlet) are available as a pack/kit of 6 O'rings Part# 9118135 from Vx for £ 11.55 List plus VAT .

Regards,
P.

£9.35 +VAT with trade club card  

[perfferle]

Damn!

Got to get me one of those!!!

Thanks ,
P.

[MutantCav]

I have already swapped over the plenum/throttle body and egr as a whole unit and the problem still occurs...should changing all that have fixed the issue in theory if its the breather/bridge orings???

[perfferle]

Hi Chris,

Try looking into the possiblity that one of your plenum O'rings was not compressed (Mentioned in an earlier PM). This could explain the vacuum leak .

Regards,

P.

[VXL V6]

Also check the brake vacuum hose from the plenum.

Where the pipe runs by the Aircon pipe it can easily wear through if it's touching, this was the problem on mine when it had a vacuum leak.

[Marks DTM Calib]

I have already swapped over the plenum/throttle body and egr as a whole unit and the problem still occurs...should changing all that have fixed the issue in theory if its the breather/bridge orings???

Fancy a drive down the A46 to South/East Nottingham?

[MutantCav]

Sure Marks DTM when are you free?? I'm around most afternoons and some mornings

[MutantCav]

ok, so I had a look at the spare plenum I have in the garage (the one that came off the v6 in the first place) took the throttle bit off...so I can see the 2 o rings between the throttle body and the plenum...can see no sign of the 3rd special o ring were talking about...there seems to be a hole in the middle underneath the plenum, is that where the o ring would be normally?? If so I'm wondering if the thing is missing completely...if not then where is it??

[perfferle]

Thats it!

That is the 'special' cage type o'ring that has been in discussion. Possible vacuum leak through there!

Regards,
P.

[MutantCav]

Will have to go have another look, cant see an o ring at all...

Is the vacuum hose the one that runs out from the right hand side of the lower end of the throttle body?

[perfferle]

Hi Chris,

Look back on the first page of this  from Roger - "The "caged looking O ring" in centre of plenum you are refering to is Vx part no: 90467543

They come in a pack of 2   £1.60 + VAT  bought some last week.

For info the O rings do not come in a kit

Roger "

Regards ,

P.

[Debs.]

Click http://www.omegaowners.com/forum/YaBB.pl?num=1152598350

Fourth picture down Chris; the detail close-up lower-right shows the bottom portion of the gaged o-ring, the rest is not visible but is around the circular breather plastic-part that inserts into the hole in the aluminium plenum....I bought one the other day for 90.p at Vx.

[perfferle]

Thanks Debs,

A picture is certainly worth a thousand words . Surely if this O'ring is missing it could cause rough engine idle / operation.

Cheers,
P.