Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: TheBoy on 14 July 2007, 20:29:04
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Just got back from giving the tractor 'a good workout', and its blown its bloody coolant everywhere - out of the cap >:( >:( >:(
At no point did the temp gauge go above 95/96 on gauge.
I know what you're going to say though :(
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I know what you're going to say though :(
Petrol & a box of Swanvestas ::) ;D ;D
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I know what you're going to say though :(
Petrol & a box of Swanvestas ::) ;D ;D
I agree, just like anything else out of Bimmer's factory.
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I take it you haven't removed the head yet?
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I take it you haven't removed the head yet?
No.
On the upside, at least it doesn't overheat....
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hi i know you done the water pump and the thermostat , but where you have been flushing the cooling sys
something could have lodged its self around there. :) :) :-/
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hi i know you done the water pump and the thermostat , but where you have been flushing the cooling sys
something could have lodged its self around there. :) :) :-/
Possibly, though its had loads of flushing. And it doesn't overheat, which would imply decent circulation I think??
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I had a car never overheated but when you stopped it chucked all the water out
changed the water pump bingo no more problems.
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I had a car never overheated but when you stopped it chucked all the water out
changed the water pump bingo no more problems.
I've had a suspicion about over pressurisation though, although it was difficult to seperate it from its previous overheating. Its obvious now that temperature is under control, that it is overpressurising not due to overheating....
This one blew its load whilst in use, not when stopped...
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Call it a day with the Tractor TB and just get Mrs The Boy an MV6 like yours ;)
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Did you checked the stat to see what temp it was, could cause similar problem
or it might be faulty. does the heater work ok. :-/
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Sorry to say it, but I'm pretty sure that it's going to be your head gasket. :(
You need to stop using the car & have a look - otherwise you are at risk of warping the head (if it hasn't already gone that way....). This is not too uncommon on the Beemer engine.
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SO WHEN ARE WE TAKING THE HEAD OFF!!
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Off with it's head ;D
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Did you checked the stat to see what temp it was, could cause similar problem
or it might be faulty. does the heater work ok. :-/
Stat is the proper 80C one. And its been changed anyway.
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Off with it's head ;D
Or break it ;)
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Off with it's head ;D
Or break it ;)
That would be so sad...
if you're comtemplating breaking it though, then you could always take the head off for a peek anyway....
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the temperature guage may say 95c but for the sensor to work it has to be immersed in water,it is quite likely that the water left quite early in your thrash.at the risk of being flamed my money is on a cracked head .head gaskets do not fix thenselves temporarily but cracked heads do by virtue of the fact that alloy expands and contracts with heat ,either way off with its head AND pressure check it
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the temperature guage may say 95c but for the sensor to work it has to be immersed in water,it is quite likely that the water left quite early in your thrash.at the risk of being flamed my money is on a cracked head .head gaskets do not fix thenselves temporarily but cracked heads do by virtue of the fact that alloy expands and contracts with heat ,either way off with its head AND pressure check it
Makes sense....
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the temperature guage may say 95c but for the sensor to work it has to be immersed in water,it is quite likely that the water left quite early in your thrash.at the risk of being flamed my money is on a cracked head .head gaskets do not fix thenselves temporarily but cracked heads do by virtue of the fact that alloy expands and contracts with heat ,either way off with its head AND pressure check it
Cracked head is what I have been expecting for some time... ...hence why not wanting to do head until I can source a new one cheaply. And why breaking is being considered an option.
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sometimes the crack can be welded successfully
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sometimes the crack can be welded successfully
Would the crack be obvious?
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sometimes the crack can be welded successfully
Would the crack be obvious?
Depends entirely where it's cracked :-/
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not familiar with that lump. on the 525 series they tend to crack through the cam carrier,but the point is you won,t know until you remove it.
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I once had a head skimmed once, and the guy made a whoopsie. He scored a huuuge hole in the mating surface!
He was able to fill it, and get it nearly good as new though.
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Cracked head is my suspicion too. I think a head gasket would have deteriorated into a steaming, lifeless lump by the side of the road with repeated driving. The way the symptoms are not getting any worse makes me think it's something a little more solid than the gasket that's got a hole in :(
Kevin
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Though, if the head cracked in such a way the cylinder pressure was getting to coolant, surely you would smell fumes?
Also, with cap off, revving the nuts off it would cause coolant to shoot out of expansion bottle?
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Every time I think about it, I begin to think its can't be. Surely any such fault would have a noticible effect on running??
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Surely any such fault would have a noticible effect on running??
I hear what you're saying however if the leak is minor enough that it doesn't cause a problem until you give it a good spanking the evidence would probably not appear unless the engine is under sufficient load, and revving in neutral is not going to put it under load (i.e. high cylinder pressures).
I would give it a good thrash, pull in at an MOT station and get them to test the gas in the expansion tank as soon as the lid is removed. There will be exhaust fumes in there if it's some sort of leak into the water jacket.
It's still speculation but you've covered everything external to the engine itself. :-/
At least if you found fumes in the expansion tank it would be confirmation that you need to bite the bullet and have a look inside.
Kevin
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This one blew its load whilst in use, not when stopped...
Ohh er Missus
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Get some of that blue liquid that turns yellow in the presents of hydrocarbons in the header tank will tell you for sure if its leaking exhaust gases in to the coolant. it did with mine in about 2 seconds blue to yellow guy said exhaust gases