Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: sticky on 31 May 2013, 08:31:51
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Hi all need some valued help and advice if possible just had my rocker gaskets done after more than selveral attemps the right sealer,original recormended gaskets oil breathers clear and still a ongoing mega head ache but after a drive out the other day and checked under the car nearly died oil down both sides of the box again and dropping off the bottom bolts.
Been assured by my man at my garage whom I tend not to dissagree with but just checking you understand with you guys ,Hes said that the rocker gaskets are deffinatly ok now.
But after my test over the weekend out into the country thought id hit the sport button and give her a bit of a zip you know all seem ok until i got back and i checked underneath.
But my man is pretty sure its now or has also been the rear crankshaft oil seal leakin (still checking)my question is what sort of job is that to do time wise difficulty and the cost.
You see We have been deliberating with that much oil that has come out of the rocker covers overtime and one time inperticular that could get in the box then thrown back out via the flywheel or is!! it the oil seal.
Help please guys thanks
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are the half moon covers at the rear of the rockers covers in securely :-\ just a thought ;)
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Rear crank seal leaks INSIDE the gear box bell housing. Then drips off the two bolts on the bottom as you describe. There is a gromit to the bell housing that can be removed. If its dry in there the rear crank seal is fine.
Print the breather cleaning guide off and show him...?
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But my man is pretty sure its now or has also been the rear crankshaft oil seal leakin (still checking)my question is what sort of job is that to do time wise difficulty and the cost. ....
Rear cranck seal involves dropping the gearbox. I paid a local garage £250 to repalce mine ..... too heavy to do myself. :-\
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As said it cant possibly be rear crank seal,if its leaking down the sides from the top of the bellhousing. It can only be from the camcovers. Either the half moons aren't seated properly at the rear of the camshaft covers,or he has overtightened the *covers so they are warping and leaking.
* strictly 8nm only.
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Try and get as much of the gearbox/rear of engine steam cleaned so that you can see where the oil is coming from. It's hard to tell where leaks are if the area is full of old oil & geaneral crap.
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Hi guys thanks for your replys to this, in responce to them .This last attemp he did mention that he did come across oil in the box which he cleared as much out as he could I guess through this gromet you speak of and assured me half moons etc were ok and all areas dry and clear of oil.
But as Ive mentioned after i got back from my run out with it found fresh oil from high up running down both sides of the box and dripping off the bottom bolts.
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But as Ive mentioned after i got back from my run out with it found fresh oil from high up running down both sides of the box and dripping off the bottom bolts.
Well, that's certainly not from the crank oil seal. Either the cam cover gaskets are still leaking or perhaps the oil lines to the cooler are leaking inside the valley.
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Hi guys thanks for your replys to this, in responce to them .This last attemp he did mention that he did come across oil in the box which he cleared as much out as he could I guess through this gromet you speak of and assured me half moons etc were ok and all areas dry and clear of oil.
But as Ive mentioned after i got back from my run out with it found fresh oil from high up running down both sides of the box and dripping off the bottom bolts.
If you've oil high up on each side of the block, it's not the rear crank seal. Cam cover seals are still goingto be the culprit ...... How about the breathers? If they're stil blocked, you're piddling in the wind with the cover seal till you sort the breathers. :-\
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yes ok noted guys someone also mentioned print off the breather picture guild so that I could show him . Sorry Where can I find this guild chaps can someone give me a link to it please
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http://www.omegaowners.com/forum/index.php?topic=90542.0
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Imo you would be better off getting an OOFer to have a look at it. Guffer does mechanic work,and I believe hes not that far away from you ?
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Hi guys thanks for your replys to this, in responce to them .This last attemp he did mention that he did come across oil in the box which he cleared as much out as he could I guess through this gromet you speak of and assured me half moons etc were ok and all areas dry and clear of oil.
But as Ive mentioned after i got back from my run out with it found fresh oil from high up running down both sides of the box and dripping off the bottom bolts.
Main pint being, it can't possibly be oil from the crank seal, if the oil is outside and above the bell housing. As Kev says, the only possibles are cam covers and oil lines to banjo bolts in the v of the engine. To check this the plenum, inlet manifold and plastic wedge need to be removed. But a leak there is rare, especially to the extent you describe.
For oil to leak from both sides, and from the top of the engine, I would suspect cam cover seals poorly fitted .... or cam seals(not likely to the extent you describe)
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In other words... I think he's cocked it up!
What seals and sealant where used...?
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Also...
Keep a very close eye on the oil level. At that rate of loss damage could easily result. Keep some oil in the boot.
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http://www.omegaowners.com/forum/index.php?topic=90542.0
Excessive crankcase pressure will cause an insignificant weep to become a leak. Chances are that the major oil loss is from the cam covers but there could also be oil escaping from the crank seal due to the pressure.
If it was my car I would have the inlet manifolds off to clean the breathers and to check that there is no leak from the oil cooler pipes.
If the cam covers are leaking (again) then they will probably carry on leaking (even with clean breathers) because once the seal is broken the oil seems to wick its way through.
The crankseal will probably stop leaking once the breathers are clean. High mileage motors always seem to have a trace of oil on the bottom of the bellhousing, I have changed crankseals in the past without any appreciable benefit so I wouldn't bother now unless I was absolutely certain it was leaking.
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A free check is to make sure the half moons are seated correctly, should be able to feel a lip of rubber outside the heads where they sit :y
No lip=not fitted correctly.
Access is a bit tight, but you should be able to touch all four of them without dismantling anything. Very easy to not fit them correctly, and the engine will pour oil out of them at anything much over idle :'(
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+1 As recommended earlier by someone . . get Guffer to do it for you, he's in your neck of the woods . . .full breather clean &
genuine gaskets . it may look like the cam covers are not leaking . . .bet they are though . The outer edges(exhaust sides ) & plug
wells may be dry but if you were to remove the plenum & inlet manifold i bet the centre of the "V" is swimming in oil ::) ::) As was
my old MFL 2.5 elite.
For some reason even very good mechanics who don't have much experience with V6 omegas & this problem , seem to mess this
job up constantly :( :(
Get someone from on here who knows the pitfalls to do the job for you . . it will pay in the end .
HTH Al :y
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Hi guys thanks again for your replys Im taking note but before I came online Id just rang garage for a update on proceedings and was informed they had been looking into the possiblity of a updated version of the breather system which instantly gave me a little hope but only to be shot down in flames when told they dont do a breather update for the 2.5 V6 CDX petrol.
But they are still on the case.
I did wonder myself if its worth just still mithodicly cleaning the breathers out with a wire coathanger like someone suggested then trying again but its another risk that i hate the thought of , the cam covers blowing again .
Or alternatively replacing the breather box etc with a new one then redo cam covers again and start afresh (providing it is diffinatly the breathers still being blocked)
Which I have tened to think together with your replys that still was the culprit all along .
How much is a brether box anyway guys.
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Is the car still at the garage :-\. Where in Hampshire are you (roughly) heading home from New Forest shortly if any use :-\
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The brother box on the back of bank 1 is very primitive. There's nothing special in there. If its blocked they just need to force a suitable blunt thin object through the pin hole and that's job done. Blowing through the pipes to it will show if its clear. If blocked remove the pipes and clear the blockage. Simples.
That applies to the plenum and the whole breather system btw. :y
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i'd be worried by the mechanics reluctance to check the work he's done and saying ''it cant be that as I did them the other day'' ::). sounds like leaking half moons to me
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Breather update? ???
That's a new one on me. You really need to check the breathers are clear, and that the gaskets are seated properly around the half-moons, as said.
If either of these are unsatisfactory, then the mechanic has done a poor job. If he's left the breathers blocked, then the gaskets will have failed again. If the gaskets are not seated on the half-moons, he's not fitted them properly. It's as simple as that. :-\
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Breather update? ???
That's a new one on me. You really need to check the breathers are clear, and that the gaskets are seated properly around the half-moons, as said.
If either of these are unsatisfactory, then the mechanic has done a poor job. If he's left the breathers blocked, then the gaskets will have failed again. If the gaskets are not seated on the half-moons, he's not fitted them properly. It's as simple as that. :-\
See above-that is your problem :y :y not crank seals :y