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Discussion Starter #1
Please can anybody help, I have just replaced my 2nd rocker gasket after discovering pipes where clogged a friend thought it might help to assist in the undoing and cleaning of pipes :rolleyes: BUT in his wisdom took them off with out marking where they went:grrr now I have the great job of putting all the breather and vacuum pipes back but dont know for sure where they start and finish has anybody out there got diagrams please as the ever so wonderful:mmmm haynes manual doesnt tell me anything any help would be apprieciated
oops its a omega 2.5 auto thankyou
 
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Breather pipes are easy, vacuum pipes - I have to ask why did your friend take those off? Tell your friend they are a muppet!

Anyway, from the plenum there are 4 tubes. 2 big, 2 small.

The 2 big tubes join together as one bigger one and then go onto the crankcase breather, behind the drivers side bank.

The left one of the small tubes also goes to the same breather but onto the smaller brass fitting.

The last small breather tube goes next to the breather box, nearer to the centre of the car on the extra little box with an elactrical plug in its' side.

Vacuum pipes... did I mention your friend is a muppet?

I hope this helps and welcome to the forum. Someone will be along in a bit who will know the vacuum connections so don't worry.:Cool2:
 

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Omega Tank Commander
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At the rear left of the engine bay there is a T-piece from the main brake servo line, from this there are a number of vaccum pipes, one for the multiram system, one for the air injection valve and one for the heater controls.

The heater control pipe first heads over to a vaccum reservoir which is located in the scuttle above the pollen filter (rear right of engine bay), from here a second pipe heads back across the rear of the engine bay and passes through a rubber coupling adjacent to where the coolant pipes pass through the bulk head to the heater matrix. From here the various cabin vaccum pipes are connected and controlled.

A further pipe then also heads back through the bulk head to the heater bypass valve (this shuts off hot coolant when the aircon is on).

The air injection pipe then heads over the passenger side cam cover to the air injection valve (front right of engine bay) .

The multiram pipe also heads over the passenger cam cover and connects to the vaccum res mounted on the inlet trunking, the output of this connects to a T-piece on the front multiram valve and a fianl pipe heads over the passenger cam cover again to the rear multiram valve.

On earlier units the multiram vaccum pipe connects to a T-piece on the rear multiram vaccum valve and then heads over the passenger cam cover to the front multiram vaccum valve.

Its also very worthwhile checking the vaccum connections to the systems. A simple test is to disconnect them and suck on the ends, place your tongue over the end and check it holds vaccum. If it doesn't then slowly work through the chain until you find the problem.
 

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Discussion Starter #4
many thanks and oh what fun i had

thankyou for the replys to my first post this was incredibly helpful but before i recieved any replys had one of my bright ideas, went off to a local scrap dealer and got under a couple of bonnets and drew diagrams
when today finally got it together I realised that after my brum went to a supposedly reputable vauxhall specialist for a phlemun change as mine was cracked its come home with 1 pipe missing and 1 just poked to the side doing nothing (suppose it needing rocker gasket change was a blessing)well I will see tomorrow if everything is ok and thanks to everybody who in there posts has mentioned various breathers that get blocked I had one that was completley bunged up but without reading the various posts would never of even checked it thanks again:Cool2:
 
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