Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: djdaveyp85 on 15 March 2009, 19:58:10
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Please see the photo below.
(http://i608.photobucket.com/albums/tt161/djdaveyp85/Nice%20Day/DSC00273-1.jpg)
Basically i have an air leak at either side of the black thingy where i have arrowed. Sprayed carb cleaner around yesterday and i've pinpointed exactly where it is. it seems as though it is maybe a bit lifted at the front. Is there a gasket or o-ring or something underneath it which may need replacing?
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Correct there is a big o ring under it.... will try get a picture.
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Hi, is the leak from underneath the part marked or from the seam in the part itself?
The top of the part you've marked just clips on and there is a bolt underneath that hold the rest on to the plenum :).
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Will it be affecting the performance of my engine?
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Yes :(.
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Hi, is the leak from underneath the part marked or from the seam in the part itself?
The top of the part you've marked just clips on and there is a bolt underneath that hold the rest on to the plenum :).
The black thing sits in the middle of the plenum and theres a small gap down either side of it. The air leak is in that gap at the front.
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its had the leak ever since it was fixed and my mpg has been terrible in the low 20's compared the the low 30's before! Hopefully fixing this will solve it?
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(http://g.imagehost.org/0816/untitled_3.jpg)
http://g.imagehost.org/0816/untitled_3.jpg
will prob be this o ring. part number: 90467543 that should help vauxhall as long as they havnt changed the part no allready since january 09!!. ;D
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Do you know the part number and price? And how easy a job it is?
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Have you removed it from the plenum to see if the o-ring is intact or even there :question.
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No don't know how :(
is it easy? i could pop out and do it now!
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part number: 90467543 that should help vauxhall as long as they havnt changed the part no allready since january 09!! shouldnt be no more than £1.50
mine was brittle and leaking aswell
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ON another note does anybody know how to get the lid off the oil filter capsule thingy? It only supposed to be 15nm but its well tight and i can't get the bugger off!
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The part in the pic. that Stemom has supplied is in fact 2 pieces sealed together, are you sure that this seal has not come apart at the front where you say it's leaking from :question.
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Don't know tbh, i just know that i could hear an air leak and when i squirted carb cleaner around it the engine kind of "stalled" when it was sprayed there.
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Good point pete. ;) good luck djdaveyp85 , i have to go now. :'(
steve
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My Mega is an early pre-facelift so doesn't have the longer plenum or the canister type oil filter as yours so best answered by someone who does but the plenum part should be an easy job :y.
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Just went out and had a look, didn't realise it would only be 3 screws! O ring is missing. so problem fixed when i get one from vx 2morrow! Thanks for your help!
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JUst in case i've over looked something, how much is it to replace the whole part if the o-ring doesn't fix the problem?
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If the o-ring was missing then i would say you've solved the problem when you get a replacement but in the event it doesn't then best to ask in the wanted section for a good second hand one :y.
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http://www.omegaowners.com/forum/YaBB.pl?num=1204142232
Try looking at the above if you find you can't get your oil filter off or it brakes while trying :(.
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OK i took another look thjis morning and the o-ring isn't missing but it is broken in 2 places, ordered one a vx with some new spark plugs as well and i'll pick them up later. On thing that did concern me when i took it off though was that was oil at the botton of the unit where the two little pipes connect into the bigger pipesa at the front of the engine. Could this be a sign that the cam cover gaskets have gone?
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No not a sign of leaking camcover gaskets but is the cause, oil will be found there as this is the engines breather system but would be advisable to give your breather system a clean out or you could end up with blown camcover gaskets if left untreated :y.
Usual sign of leaking gaskets is oil in the plug wells :(.
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Haven't managed to get into the plug wells yet as i need to get an extension for my ratchet so i can get the coils off!
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Thanks everybody for your help, fitted the new o ring tonight and it has fixed the air leak, which has also fixed my high idle and my low mpg, he's now doing about 8mpg better! Cleaned out the breathers up here whilst i was in there and ran some carb cleaner through the air intake, al seems good now.
Going to change the spark plugs next but i need to find my extension for my ratchet first to get the screws off the coild pack as the fuel pipes are in the way!