Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: omegabeast on 18 August 2007, 21:34:17
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Hi,
Bought a 2.5 CDX V6 manual today. Very pleased with it apart from 3 problems.
1: Has quite a bad oil leak. When i open the bonnet, stand facing the car and look down between the engine and the radiator there is oil sitting there on the bottom , by the sump. I just hope its a sump gasket and not anything major. Is it common on these?
2: Back tyres are 205's instead of 225's that the book says they should wear.
3: Airbag light is on , no signs of being in an accident. Any quick fixes on how to get it sorted?
Matt :y
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Hi,
Bought a 2.5 CDX V6 manual today. Very pleased with it apart from 3 problems.
1: Has quite a bad oil leak. When i open the bonnet, stand facing the car and look down between the engine and the radiator there is oil sitting there on the bottom , by the sump. I just hope its a sump gasket and not anything major. Is it common on these? - Check Pressure switch at bottom left hand corner - had the same issue myself - switch and seal are less than a tenner - clean up oil first though - as you'll get a better aspect of where it's coming from
2: Back tyres are 205's instead of 225's that the book says they should wear. self explanatory - but will affect your speedo accuracy also
3: Airbag light is on , no signs of being in an accident. Any quick fixes on how to get it sorted?Check the connections under the front seats - usually the seat belt tensioner plug is slightly loose - I sometimes just move the front seats back and forwards a few times - usually does the trick
Matt :y
Welcome :y
Lee
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Cheers,
What is the pressure switch? , would it make it lose oil like that?
Matt
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Cheers,
What is the pressure switch? , would it make it lose oil like that?
Matt
As you're facing the engine - very bottom corner on the left - you should see a loop of cable going into the sump connecting to the pressure switch. The seal was shot on mine - really easy fix if it is this - takes about 5 mins just unclip cable - then put small container underneath switch and 19mm ring spanner to unscrew I think - as I say - clean up the oil and have a good look as well as with a clean cloth (after it's been cleaned up) to check for the oil leak.
Check the simple things first :y
Lee
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Cheers mate,
Well loo knee has pm'd me saying he will come and help fix it (he lives about 3 miles away)
I love this forum already , very friendly :y :y
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Cheers mate,
Well loo knee has pm'd me saying he will come and help fix it (he lives about 3 miles away)
I love this forum already , very friendly :y :y
Excellent Loo Knee should help you along significantly :y
This forum has saved me a small fortune since I've came across it. Best one I've ever been involved with.
Welcome aboard :y
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Cheers Tafty :y
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Cheers,
What is the pressure switch? , would it make it lose oil like that?
Matt
As you're facing the engine - very bottom corner on the left - you should see a loop of cable going into the sump connecting to the pressure switch. The seal was shot on mine - really easy fix if it is this - takes about 5 mins just unclip cable - then put small container underneath switch and 19mm ring spanner to unscrew I think - as I say - clean up the oil and have a good look as well as with a clean cloth (after it's been cleaned up) to check for the oil leak.
Check the simple things first :y
Lee
You are talking about the switch next to the Crank Pulley aren't you?
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Cheers,
What is the pressure switch? , would it make it lose oil like that?
Matt
As you're facing the engine - very bottom corner on the left - you should see a loop of cable going into the sump connecting to the pressure switch. The seal was shot on mine - really easy fix if it is this - takes about 5 mins just unclip cable - then put small container underneath switch and 19mm ring spanner to unscrew I think - as I say - clean up the oil and have a good look as well as with a clean cloth (after it's been cleaned up) to check for the oil leak.
Check the simple things first :y
Lee
Metric 24 - ring spanner or very very deep socket needed.
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Cheers,
What is the pressure switch? , would it make it lose oil like that?
Matt
As you're facing the engine - very bottom corner on the left - you should see a loop of cable going into the sump connecting to the pressure switch. The seal was shot on mine - really easy fix if it is this - takes about 5 mins just unclip cable - then put small container underneath switch and 19mm ring spanner to unscrew I think - as I say - clean up the oil and have a good look as well as with a clean cloth (after it's been cleaned up) to check for the oil leak.
Check the simple things first :y
Lee
Metric 24 - ring spanner or very very deep socket needed.
Good job I have both then ;)
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This is it - As I said a 24mm ring spanner!!! ;) (cheers fellas :y)
(http://img.photobucket.com/albums/v348/Tafty/PressureSwitchV6.jpg)
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Hmmmm.... I know this pic..... ;)
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That is exactly where the oil is sitting , on that ledge so probably is that!
Thanks alot everybody :y :y :y
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Hmmmm.... I know this pic..... ;)
Thought it was that one, I will take some tools down anyway thanks Lads :y
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Hmmmm.... I know this pic..... ;)
It's funny how coincidences keep turning up on here :y ;D
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Loo Knee ,
Are we doing it outside PMF or are you gonna follow me to mine (2 mins away)?
Also are you doing it 2moro morning? , if so do you want me to bring anything?
Rags, cardboard to kneel on etc?
Matt
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had the same problem with my mates car. we thought it was probably that switch to . it was the CAM COVER GASKETS..
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Hi,
Well Loo Knee has been down and we have had a look. It is actually the sump gasket after all. I took off the engine cover underneath the sump and it was there.
Going to get a new sump gasket 2moro with a new oil filter and 5 litres of semi synthetic genuine vauxhall oil.
Just got to sort out the rams not working now (in another post) :-/
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are you deffinatly sure its the sump gasket.i beleve thats most unusal on the omega. its not the front crankshaft oil seal? i went through this problem with my mates omega first we thought it was that oil sensor then we were convinced it was crank oil seal ended up it was cam caver gaskets . the oil was running down the middle of the v passing the water pump and crank pulley on the way...?
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Hi,
If i look under the car the sump gasket is smothered in it. I did notice a little bit by the camcovers but cant see it running down (but i didnt look that much to be honest)
Matt
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the best thing you could do is cover it with gunk and hose it down. then keep a close eye on it. you should be able to catch its where abouts then. theres no point in changing the sump gasket if its not that.
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Hi,
I might have a proper look 2moro , and hose it down underneath then.
Also when i have the blowers on in the car i smell an oily smell , not all the time but its there. And when ive been out in the car , i get out of the car and can smell hot oil.
Will this be because of the oil leak?
Matt
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When we got the under cover off you could see that the engine around the Crank Pulley and the Pressure Switch was dry no sign of oil.
The Sump Gasket looked to be soaked in oil (the gasket looked thicker in some parts than others as though it was swollen!) but the bolts weren't loose.
Pulled up the front drivers side plug lead and there is oil in the well which touchs the bottom of the lead.
One of the two smaller breather pipes that fit onto the rear of the Plenum was split which we cut and refit.
Both Multi Rams are not working either which must be the reason Matt thinks the car seems sluggish.
Personally I would change the Cam Cover Gaskets, clean the breathers whilst I had the scuttle panel off and would be lookin for an air leak somewhere.
If like some of you think it could be the Cam Cover Gaskets thats causing the leak, once they are done if that oil leak is still there I would then do the Sump Gasket.
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yes deffinatlly thats what allways happens. infact its usally because its burning off the exhaust manifolds. i tell you mate i would bet money on these cam cover gaskets being the culprit when you find out id love to know .. ;)
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My money is on the cam cover gaskets too, given this is a very common condition on the V6's.
I suggest removing the plenum (excellent guide on here), cleaning the breathers (I would do that on any new acquisition anyway) and while you are there pull the plug leads and check for oil on both banks - also have a good feel around the outside - they can leak either outwards (results in burnt oil smell as oil drips onto exhaust and that all Omega owners are familiar with ;)) or inwards into the plug wells, or both. If you are really convinced they are ok then look elsewhere. It is an averagely painful job to change them esp passenger side, and not for free (c. 50 quid for the gaskets, sealant etc), but if leaking they need doing or will require even more painful and expensive jobs elsewhere in future.
While the plenum is off , worth changing plugs if that is anywhere near due, and have a look at the HBV round the back to check that is not showing signs of leaking coolant. If its not, it will do sometime and its worth knowing where it is.
BTW remember that gravity will result in the leaked oil moving generally downwards, so if you see it on the sump rim it just means its coming from somewhere above (and not necessarily straight above either..)
Good luck!
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Hi,
Yeah i will definitely let you know how i go on.
I think i will buy the camcover gaskets, sump gasket and spark plugs to go with the oil and oil filter that i bought today.
Will then tackle them all in one go.
Dont know if loo knee wants to give me a hand again when hes free (cheeky) ;) ;) ;)
Matt
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Don't mind giving you a hand :y
You say you have got your oil and filter? did you get Vauxhall Oil?
I would just get your Cam Cover Gaskets (there are 4) + O rings + black sealant P/N 90485251 first, we will do the breathers and plugs if you want too, see if we can find an air leak too, but i would leave the sump gasket. On the off chance it is the Cam Covers leaking not the sump like a lot of the guys on here think. :y
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Cheers Loo Knee,
Ok i will get the camcover gaskets tomorrow and the sealant. Also will get the spark plugs.
I feel really bad about asking for help , its just i dont know a great deal about these cars yet.
Matt :y
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Cheers Loo Knee,
Ok i will get the camcover gaskets tomorrow and the sealant. Also will get the spark plugs.
I feel really bad about asking for help , its just i dont know a great deal about these cars yet.
Matt :y
This is why this Forum is so great though, alot of the lads on here get helped at sometime or other, and in turn they help where they can in return.. :y
If you take that sealant part number to Greenhous with you, you will be sure to get the right one. You need the "O" rings too they seal inside where the Cam Cover Bolts go through the Cam Cover. Also mention that you work for JCB you will get 10% off :y
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Hi,
Is it best to get the camcover gaskets from greenhous or will i get them cheaper from somewhere else?
Also,
Went to shelton auto spares on stoke road today , got 5 litres of gm vauxhall 10/40 semi synthetic oil for £11. Thats cheap isnt it?
So if i get the o rings, camcover gaskets and spark plugs 2moro , when would you be able to give me a hand mate?
p.s Im very good with computers or mobile phones incase you or anybody needs any help with that?!
Matt :y
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note you need access to a torque wrench capable of 8NM (quite low) - I discovered this when I was reassembling mine :-[. Its vital not to overtighten the camcover bolts or the bolts that go into the alloy plenum.
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Hi,
Is it best to get the camcover gaskets from greenhous or will i get them cheaper from somewhere else?
Also,
Went to shelton auto spares on stoke road today , got 5 litres of gm vauxhall 10/40 semi synthetic oil for £11. Thats cheap isnt it?
So if i get the o rings, camcover gaskets and spark plugs 2moro , when would you be able to give me a hand mate?
p.s Im very good with computers or mobile phones incase you or anybody needs any help with that?!
Matt :y
I don't think £11 is bad at all but someone with a TC (trade card) would pay about £5.
You will get told on here to always get Vauxhall Cam Cover Gaskets as the after market ones don't last as long, aren't the right shape exactly etc.... also Vauxhall spark plugs are very good too...
I personally would get the lot from Vauxhall.
Plugs are about £3 each, £55 for all the Cam Gaskets (4) and "O" rings, £6 ish for the Gasket Sealer.
Wouldn't bother yet with your Sump Gasket lets see if this stops it first.
Next weekend I should be able to do it but will need to come up here.
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note you need access to a torque wrench capable of 8NM (quite low) - I discovered this when I was reassembling mine :-[. Its vital not to overtighten the camcover bolts or the bolts that go into the alloy plenum.
I have one Ian acquired it from somewhere ;D
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Loo Knee,
Okay i will get all the stuff tomorrow excluding the sump gasket just incase it is solved.
I can come up yours no problem.
I will owe you a bloody big drink if you can
Matt :y ;) :y
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note you need access to a torque wrench capable of 8NM (quite low) - I discovered this when I was reassembling mine :-[. Its vital not to overtighten the camcover bolts or the bolts that go into the alloy plenum.
I have one Ian acquired it from somewhere ;D
I tell you I felt a right prat when I realised my wrench only started at 20Nm. ::)
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note you need access to a torque wrench capable of 8NM (quite low) - I discovered this when I was reassembling mine :-[. Its vital not to overtighten the camcover bolts or the bolts that go into the alloy plenum.
I have one Ian acquired it from somewhere ;D
I tell you I felt a right prat when I realised my wrench only started at 20Nm. ::)
;D ;D ;D
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I would degrease engine, then have another look at where it is coming from :)
The SRS light will need a Tech2 to reset.
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Hi,
How do i degrease?
Do i just get some degreaser and rub it all over the engine and then jetwash it?
If so what do i cover up that i dont want getting wet?
Matt
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avoid the jetwash - will do more harm than good.
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Ians,
Whats the best way to do it then mate?
Matt ;)
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personally I would just wipe it off as much as possible. You can get degreaser spray that then washes off either with water and sponge or gentle hose. The problem is that there are an awful lot of sensors around which could easily be damaged/dislodged etc. Just my opinion.
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personally I would just wipe it off as much as possible. You can get degreaser spray that then washes off either with water and sponge or gentle hose. The problem is that there are an awful lot of sensors around which could easily be damaged/dislodged etc. Just my opinion.
I agree with this method - brush/spray on a degreasing agent, wipe with rags, repeat.