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[davieboy0312]

I had a 3.0 with a left bank head gasket failure. Good reason to rebuild though. So HG failure can happen

But I would listen to the more experienced members first before anyone else. If members want to fight and bitch. Go elsewhere. This forum has great members and loads of info

[Migv6 le Frog Fan]

It can and does happen sometimes on 2.5 / 3.0. It is unheard of an the 2.6 / 3.2 which have a diifferent type of gasket.
Hence people looking for different answers. 

[Lazydocker]

It can and does happen sometimes on 2.5 / 3.0. It is unheard of an the 2.6 / 3.2 which have a diifferent type of gasket.
Hence people looking for different answers. 

Exactly...

[jimbo125]

Just rebuilt my 2.5 246 bank rear end gasket went to mush, yep it does happen good excuse to decoke head, ports and crowns

[Lazydocker]

Just rebuilt my 2.5 246 bank rear end gasket went to mush, yep it does happen good excuse to decoke head, ports and crowns

To reiterate what is being said..

HG Failure is known on 2.5/3.0 engine but it doesn't result in oil/water mixing or entering combustion chamber but a coolant leak to the outside.

In the 2.6/3.2 engine it is virtually unheard of for there to be a genuine HG Failure. It is more often another fault that has been incorrectly diagnosed.

[omega2018]

Why do all of your posts have to be argumentative and aimed at getting a rise? Actually... It seems to be a general trend. Probably part of the reason many of the long established members have lost interest

defo.  seems to have started here with post 11:

Ignoring the fact that the layout of the oil and coolant passages makes it physically impossible for the two to mix
Sure it was MarkDTM that explained why this was the case...

fortunately for the forum the poster seems to have left   

unfortunately...

To reiterate what is being said..

HG Failure is known on 2.5/3.0 engine but it doesn't result in oil/water mixing or entering combustion chamber but a coolant leak to the outside.

In the 2.6/3.2 engine it is virtually unheard of for there to be a genuine HG Failure. It is more often another fault that has been incorrectly diagnosed.

..the misconception seems to be being re-spread. 

to clarify, a head gasket failure on any water cooled engine is likely to involve water entering the cylinders and therefore getting into the oil. what MarkDTM was saying (and had to clarify to the gone poster) is that oil won't get in the water - not that the two won't mix in the oil and water get into the combustion chamber..  happy to discuss at length (and have done ) but i think it is obvious.

that something is virtually unheard of doesn't mean it won't happen, overheating any engine enough is likely to produce a hg faiure - something has to go and the hg is less resilient than the solid block or solid head. 

[Entwood]

Why do all of your posts have to be argumentative and aimed at getting a rise? Actually... It seems to be a general trend. Probably part of the reason many of the long established members have lost interest

defo.  seems to have started here with post 11:

Ignoring the fact that the layout of the oil and coolant passages makes it physically impossible for the two to mix
Sure it was MarkDTM that explained why this was the case...

fortunately for the forum the poster seems to have left   

unfortunately...

To reiterate what is being said..

HG Failure is known on 2.5/3.0 engine but it doesn't result in oil/water mixing or entering combustion chamber but a coolant leak to the outside.

In the 2.6/3.2 engine it is virtually unheard of for there to be a genuine HG Failure. It is more often another fault that has been incorrectly diagnosed.

..the misconception seems to be being re-spread. 

to clarify, a head gasket failure on any water cooled engine is likely to involve water entering the cylinders and therefore getting into the oil. what MarkDTM was saying (and had to clarify to the gone poster) is that oil won't get in the water - not that the two won't mix in the oil and water get into the combustion chamber..  happy to discuss at length (and have done ) but i think it is obvious.

that something is virtually unheard of doesn't mean it won't happen, overheating any engine enough is likely to produce a hg faiure - something has to go and the hg is less resilient than the solid block or solid head.

What a pointless, nasty, vindictive and totally unnecessary comment.  Do us all a favour and take the same action .. please.

and BTW  ..sticking a "smiley" on the end of nastiness does not decrease it one iota.

[omega2018]

What a pointless, nasty, vindictive and totally unnecessary comment. 

[YZ250]

migmog:

What is this fixation you have with the OP having oil in his water/water in his oil. He say's he has no oil in his water, you post about oil in water.    He say's he has no water in his oil, you post about oil in his water/water in his oil.    Loss of compression is caused by the loss of seal in the combustion chamber. We know that already, it's just a case of finding out why this has happened. It could be loss of compression between fire rings on the gasket, either between cylinders or outwards towards a water jacket. Between cylinders would match the OP's compression readings on 1 & 3 and 2 & 4 but so would valves not seating correctly due to an unknown to us incident, hence other members suspecting timing issues.
So far you have had the OP's car with oil in his water, water in his oil and overheating, yet the OP has mentioned none of those symptoms. Believe it or not we are trying to help, and you just quoting from books you've read isn't helping the OP. We know what the symptoms are but we haven't got the car in front of us to see for ourselves first hand, so people pitch in with suggestions based on the information set before them.

I should imagine that the OP has long fixed this car (if not why not  ) but won't conclude his findings in the thread as he's getting free entertainment from you bleating on about his oil and water. 
We have no previous info regarding this car, did it overheat, did it throw a belt, has it been timed incorrectly? We are not privvy to any of this info so it looks like a strip down is required to sort it (OP, pull your finger out  ), and more to the point, is there any bloody oil in the water?   

no signs of oil in expansion vessel.

headgasket failure = leak in the gasket which lies between the combustion cylinder and the water cooling.  hence over heating, hence water sucked into and/or leaking into the combustion cylinder = water leaks past rings into crankcase and/or steam is blown past rings into crankcase where there is .....OIL.
[/quote]

Ok have checked dipstick only oil on this.

Water getting into the oil is not specific or otherwise to the omega - most cars have cylinders, pistons, piston rings and oil in the sump.  mayo doesn't mean the hg is blown it could just be condensation into the oil but it is one symptom of a hg failure

this isn't rocket science it is commonly known.  hg failures are rare on omega Vs so maybe members have never come across it but just use google, eg:

"What are the symptoms of a Blown Head Gasket?  As coolant is pulled into the combustion chamber it will cause your engine coolant level to drop.  This can cause a low coolant light and overheating if the cooling system on your vehicle is not continually topped off.  Also, once your engine is turned off the coolant still left in the engine cylinder will seep past your piston rings into your engine oil.  Coolant mixed with oil will make a white milky substance.  You may see this on your engine oil dip stick or on a ring around your oil cap."

http://gobdp.com/blog/what-are-the-symptoms-of-a-blown-head-gasket/ (or many other links just look for yourselves)

[omega2018]

seriously, if you can't be a***d to read the original post (or many subsequent ones) talking about mayo in the filler cap or rust in the cylinders i can't be bothered to read the rest of your ramblings, sorry.

[YZ250]

seriously, if you can't be a***d to read the original post (or many subsequent ones) talking about mayo in the filler cap or rust in the cylinders i can't be bothered to read the rest of your ramblings, sorry.

No need to apologise, the rambling quotes are yours.    But now you have pointed out the mayo it's given me an insight in to your knowledge of this engine, and if that's what you've based the oil/water fixation you are not helping the OP. I believe this was addressed in an early reply as well. 

[omega2018]

ok then since you are being personal

1) you say he has no water in his oil - are you thick?  mayo is water and oil mixed together.
2) you say cite 'no water on the dipstick' as being evidence of no water mixing with oil - are you thick?  water boils at 100C and evaporates long before that turning into.. mayo.  there will be no water left in the oil itself in a running engine after it's got hot. it'll be mayo (and yes i know there are other causes of mayo )
3) you still insist there is no evidence of water getting into the cylinders even after the op says the cylinders are rusting - are you thick?  rust caused just by oil and petrol is it? or are we back to the puddle theory?  not a water puddle in your view I presume.
4) you ask is there "any bloody oil in the water". - are you thick? we all established in the first few posts that it will not be oil in the cooling system. it's water in the lubrication oil system not oil in the cooling water system

If you are going to start off insulting people being helpful, at least bother to read the posts and get your facts right.

[zirk]

Seems to be a lot of 'Are you Thick' comments from you in there, hopefully, you do realize this is actually an established and predominately a very helpful Forum, rather than Ive got a bigger keyboard then yours.

[Lazydocker]

Why do all of your posts have to be argumentative and aimed at getting a rise? Actually... It seems to be a general trend. Probably part of the reason many of the long established members have lost interest

defo.  seems to have started here with post 11:

Ignoring the fact that the layout of the oil and coolant passages makes it physically impossible for the two to mix
Sure it was MarkDTM that explained why this was the case...

fortunately for the forum the poster seems to have left   

unfortunately...

To reiterate what is being said..

HG Failure is known on 2.5/3.0 engine but it doesn't result in oil/water mixing or entering combustion chamber but a coolant leak to the outside.

In the 2.6/3.2 engine it is virtually unheard of for there to be a genuine HG Failure. It is more often another fault that has been incorrectly diagnosed.

..the misconception seems to be being re-spread. 

to clarify, a head gasket failure on any water cooled engine is likely to involve water entering the cylinders and therefore getting into the oil. what MarkDTM was saying (and had to clarify to the gone poster) is that oil won't get in the water - not that the two won't mix in the oil and water get into the combustion chamber..  happy to discuss at length (and have done ) but i think it is obvious.

that something is virtually unheard of doesn't mean it won't happen, overheating any engine enough is likely to produce a hg faiure - something has to go and the hg is less resilient than the solid block or solid head.

Actually, I was referring to you.

Clearly you MUST be right and know more than anyone else. You have shown your true colours with pointless, nasty comments both before and after the post I have quoted.

But, as I'm sure someone with your fantastic knowledge will know, if water and oil were to mix then it wouldn't boil off before turning to Mayo... The engine oil temperature is normally around 65-75 degrees (so not over 100 degrees) and besides, only pure water boils at exactly 100 degrees

ok then since you are being personal

1) you say he has no water in his oil - are you thick?  mayo is water and oil mixed together.
2) you say cite 'no water on the dipstick' as being evidence of no water mixing with oil - are you thick?  water boils at 100C and evaporates long before that turning into.. mayo.  there will be no water left in the oil itself in a running engine after it's got hot. it'll be mayo (and yes i know there are other causes of mayo )
3) you still insist there is no evidence of water getting into the cylinders even after the op says the cylinders are rusting - are you thick?  rust caused just by oil and petrol is it? or are we back to the puddle theory?  not a water puddle in your view I presume.
4) you ask is there "any bloody oil in the water". - are you thick? we all established in the first few posts that it will not be oil in the cooling system. it's water in the lubrication oil system not oil in the cooling water system

If you are going to start off insulting people being helpful, at least bother to read the posts and get your facts right.

Whilst I agree that rust in the cylinder is a byproduct of water in the combustion chamber there are other reasons other than just jumping to HG, especially if the engine has been stood.

[YZ250]

are you thick? 

 

Wow, much better response than I'd anticipated, wind them up and watch them go. 

Well chuffed with that, none of which helps the OP sadly.