Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: tunnie on 04 August 2007, 20:05:06
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Come back to find my dad has not been using his car, kept getting coolant warning.
I went to have a look, coolant expansion tank is empty :o
Seamed to have a lot of pressure in the tank, checked the oil, its fine. No water, its how the oil should be, as is the filler cap.
Coolant Expansion tank is clear and dry, no gunge, just no coolant.
I am thinking HBV? (its a 2.2)
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Worth checking. :y :y
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Come back to find my dad has not been using his car, kept getting coolant warning.
I went to have a look, coolant expansion tank is empty :o
Seamed to have a lot of pressure in the tank, checked the oil, its fine. No water, its how the oil should be, as is the filler cap.
Coolant Expansion tank is clear and dry, no gunge, just no coolant.
I am thinking HBV? (its a 2.2)
Mr DTM has a great bodge gadget for looking for coolant leaks. But worth checking HBV and looking for other leaks.
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Come back to find my dad has not been using his car, kept getting coolant warning.
I went to have a look, coolant expansion tank is empty :o
Seamed to have a lot of pressure in the tank, checked the oil, its fine. No water, its how the oil should be, as is the filler cap.
Coolant Expansion tank is clear and dry, no gunge, just no coolant.
I am thinking HBV? (its a 2.2)
Mr DTM has a great bodge gadget for looking for coolant leaks. But worth checking HBV and looking for other leaks.
No obvious leaks can be seen, it seams to go down very quickly when it does, which suggests HBV.
Whats best way to check a suspect HBV?
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Come back to find my dad has not been using his car, kept getting coolant warning.
I went to have a look, coolant expansion tank is empty :o
Seamed to have a lot of pressure in the tank, checked the oil, its fine. No water, its how the oil should be, as is the filler cap.
Coolant Expansion tank is clear and dry, no gunge, just no coolant.
I am thinking HBV? (its a 2.2)
Mr DTM has a great bodge gadget for looking for coolant leaks. But worth checking HBV and looking for other leaks.
No obvious leaks can be seen, it seams to go down very quickly when it does, which suggests HBV.
Whats best way to check a suspect HBV?
Visual check
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Mark,
Preferably Get the car up on axle stands, get the scuttle off, fill the header tank, and run it up to temperature.
As it's warming up, visual check around all the hoses, rad, stat housing on front of the engine, passenger side... and look/feel down the HBV area. Have a little torch handy.
If you've not spotted anything by this point, look underneith, if you see drips try and trace/pinpoint - I suspect you'll see drips on the passenger side of the bellhousing.
I once went to see an Omega MV6 with a mysterious coolant leak that couldn't be diagnosed. I finally traced it to the fan switch on the rad.
I strongly suspect a leak rather than anything serious - but do check the exhaust for white smoke when revved ::)
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When moving cars around before i left, i did notice a little smoke from my dads car :-[
It was not a lot, just thought it was the usual steam. Took it for a 3 mile hard run, came back and it had dispeared so thought nothing more of it?
However it was smoking at idle when warm ish.... so will take a look.
If it is the HBV which i hope! - I see we have no maintenance guide... no here is a stupid question..... :-[ :-[ where abouts is the HBV on the 2.2?
I am thinking right at the back of the engine, on the passenger side down a bit?
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When moving cars around before i left, i did notice a little smoke from my dads car :-[
It was not a lot, just thought it was the usual steam. Took it for a 3 mile hard run, came back and it had dispeared so thought nothing more of it?
However it was smoking at idle when warm ish.... so will take a look.
If it is the HBV which i hope! - I see we have no maintenance guide... no here is a stupid question..... :-[ :-[ where abouts is the HBV on the 2.2?
I am thinking right at the back of the engine, on the passenger side down a bit?
I think its a trickier location than the v6! Underneath somewhere, I've looked for it before now, but could not see it.
(doesnt mean much)
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right, just had the car up on a stand.
Filled the coolant tank back up, and got the car up to temp. Reved it at 2k for a few mins saw the temp rise nicely, but no sign of a leak, no white smoke from the exhaust on hard revs, looked at the back of the engine on the drivers side, where the 2 big black pipes go into the bulk head, all dry, looked all around the back of the engine, all dry!
:-/ :-/
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just been out again, not started it since before. The coolant has gone down by about 1cm in the tank, but the ground is still dry :-/
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Tunnie, peice od piss. up by bulkead towards drivers side. Usual place. (well , it is on the 2.0 anyhow)
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Tunnie, peice od piss. up by bulkead towards drivers side. Usual place. (well , it is on the 2.0 anyhow)
I think i can see it, the 2 big black pipes that go though the bulk head on the drivers side?
If so still dry? - But at least there is no white smoke out the exhaust.
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Just had another look, Easy enough to check, about the same location as the V6, but a bit lower down.
No trouble for gadget arms!
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Mr DTM needs to do a sideline in his great little gadgets for pressuring the coolant system
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I think i can see it, the 2 big black pipes that go though the bulk head on the drivers side?
If so still dry?
Does this help identify the HBV? Its a 2.5 V6.
(http://i151.photobucket.com/albums/s129/wakeypat/P8030044.jpg)
Good luck, Pat
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Tunnie,
Depending on how the HBV fails (indeed if that is what it is) it may or may not leak depending on whether you have the AC switched on. Worth trying on or off.
On my 2L I got to it from underneath the car - about half way up back of the engine on drivers side. Can't check now as I've sold the car..
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thanks for the comments all but 99% sure its the head gasket thats gone :-[
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I concur, I think its HG... :(
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Do you need anything from me? I'm going on holiday in less than an hour....
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Sorry To say Tunnie Sounds Exactly the same as what mine was like :(
Heres is one to try make sure the Header tank is full run engine for abit then leave it over night if it misfires when starting and then clears after acouple of revs then its the head gasket.
Water leaks into one of the pots causing the misfire on startup after standing over night the engine quickly burns off the water.
get sniffing the header tank.
I had loss of coolent oil was fine dipstick was fine as the head Gasket had gone between the coolent and pot.
The HVB you cant miss it get under the Steering Box and its stright up and on the left hand side
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Try it on both full cold and full hot climate panel settings.
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A compression check might be a good next step if you can't locate a leak... :(
Kevin
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A compression check might be a good next step if you can't locate a leak... :(
Kevin
There is already exhaust in the header tank...
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There is already exhaust in the header tank...
D'oh! missed that bit. Pretty conclusive then :(
Kevin
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Heres is one to try make sure the Header tank is full run engine for abit then leave it over night if it misfires when starting and then clears after acouple of revs then its the head gasket.
Thats exactly what happens! :-[
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Yep Its the Head Gasket Mate :( I bet its Number One Pot that has gone.
It cost me about £300 to get the Head Gasket Done Including A Head Skim and all the Bits and Bobs like Anifreeze.
How many Miles is on your dads 2.2 Tunnie ? Was The Coolent Flushed and Changed Every 2 Years Odd ?
Craig
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Should make one hell of a how2!
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If it hasn't actually overheated you might get away without the skim which means that you can leave the manifold attached and just disconnect
the exhaust at the downpipe join.
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To be honest for the price of a skim its not worth taking the chance
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just ticked over on 93k, its been dealer serviced. (yes, yes i know!)
Not sure when the coolant was last changed, i know i should have flushed it....
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That one of the biggest Failings of the Head Gasket on a 2.0 2.2 4 Pot old Coolent
I change Mine Every Year Now
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The X20XEV (Not sure about the 2.2 but looks the same) runs hotter than previous VX 16 Valvers so as you say, duff (as in not 50% mix) coolant due to lack of changes is the normal cause
When the HG went on mine it was from an oilway, not any of the waterways so I was very lucky, very common for them to let go from around the 80K mark.
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That one of the biggest Failings of the Head Gasket on a 2.0 2.2 4 Pot old Coolent
I change Mine Every Year Now
Think we will do the same now!
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In theory it should have had a full coolant change as a minimum at 40k and 80K miles when the cambelt, tensioner, idelrs adn water pump were done.....or was the water pump never changed?
Has it been loosing coolant and been topped up with just water?
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In theory it should have had a full coolant change as a minimum at 40k and 80K miles when the cambelt, tensioner, idelrs adn water pump were done.....or was the water pump never changed?
Has it been loosing coolant and been topped up with just water?
Never had an issue with it, not sure if the coolant or water pump was done at the dealer, it was done before OOF was around. I suspec the water pump was not changed, although the cambelt 'kit' was done.
Topped it up with a weak antifreeze mix before i went on hols, it was used couple of times when i was away, and was empty on my return.
Not used since....