Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: V6Astra F on 13 April 2009, 07:28:44

Title: Multiram System Question
Post by: V6Astra F on 13 April 2009, 07:28:44
Hi

I have a problem with the multiram intake system on the X25XE intake the valves wont close or function as they should . if you rev the motor and let go of the gas the top one closes for a split second sometimes the bottom one closes aswell so i was wondering do i need to get the vacuum resevoir or coud we have missed a leak on the intake .

Thank You
Title: Re: Multiram System Question
Post by: feeutfo on 13 April 2009, 08:51:39
there are 2 vac tanks on the v6. One mounts on the intake "bag pipes" and the other sits behind the pollen filter housing on the bulk head.

There is a diag. in the maintenance guides section. See link below.

But, assuming the v6 is not factory fit in an Astra, i wonder if you had room to fit the intake, as we see it on the omega, in that engine bay? Blimey...

Title: Re: Multiram System Question
Post by: V6Astra F on 13 April 2009, 09:20:04
heres a pic of the motor before it ran , since then the wires have been sorted ill post a new pic later today witch will be better quality  ;D

(http://i127.photobucket.com/albums/p131/Angeleyed200is/8.jpg)

Title: Re: Multiram System Question
Post by: TheBoy on 13 April 2009, 10:26:56
looks like the earlier Vectra setup. THought that only had one valve, though been a long time since I've seem one.

Common problem is the vac tanks have a 1 way valve in that fails, causing the vac not to hold - easily fixed with an inline valve :)
Title: Re: Multiram System Question
Post by: V6Astra F on 13 April 2009, 16:09:59
so if i get a vacuum resevoir they will work because i dont have one fitted now ?
Title: Re: Multiram System Question
Post by: TheBoy on 13 April 2009, 17:07:30
Quote
so if i get a vacuum resevoir they will work because i dont have one fitted now ?
I imagine it should have a res somewhere, but can't remember enough about the older style vectra setup to confirm  :-[
Title: Re: Multiram System Question
Post by: feeutfo on 13 April 2009, 17:14:56
are you sure of the correct operation? Not that i am, in as much that i beleive they are closed by default and open when operated by ecu/vac?

Do you have any symptoms/steps in the power delivery. Assuming omega rules apply to your set up of course. ??
Title: Re: Multiram System Question
Post by: V6Astra F on 13 April 2009, 17:35:26
i found some pictures on www.tssd.co.uk where they explained how they should work , i found the vectra sport forum and after looking at a few of the pictures i noticed i didnt have the reservoir . the car feels strong but i have read that it could affect the power delivery if they dont function . i just want to get permission from someone to post a pic of his/her enginebay .
Title: Re: Multiram System Question
Post by: Marks DTM Calib on 13 April 2009, 18:41:19
You need a vac reservoir.

If you don't, then on wide throttle openings where inlet manifold vacuum is bugger all the multiram wont work :y
Title: Re: Multiram System Question
Post by: V6Astra F on 13 April 2009, 18:53:36
Im going to try and get one this week hope the local agents have it .

Thank You  :y :y
Title: Re: Multiram System Question
Post by: tmx on 13 April 2009, 21:42:04
Vac Tank on the vectra lives on the back of the vectras plenums nr the Brake servo pump pipe

vectra does have 2 multirams one big one and a small one but they run off 1 vac feed

small one does the same job as the omegas front one and big one the rear

based on the experiance of the 97 V6 Vectra B

if you look at the back of your plenum there should be 2 holes to mount the tank on then use 2x tourq bolts to hold him on