Omega Owners Forum
Chat Area => General Car Chat => Topic started by: JamesV6CDX on 18 July 2009, 18:18:21
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Well I've got the Astra running. It was something silly, just an earthing issue.
As many will know, I removed the head, and fitted all new stem seals, due to it burning oil (blue smoke) when revved after idle.
Well I did a complete job on the head, re-lapped all the valves, fitted proper green stem seals, torqued down the head with a new HG, spotless surfaces, so on....
Also, entire breather cleanout.
Guess what?
The problem is exactly the same.
Let it idle a minute or two, give it a hard rev - and watch everything behind you disappear into blue smoke!
Fed up with this now >:(
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Sorry to hear mate :(
Try here: http://www.astraownersclub.com/vb/index.php, these guys know a lot about Astra's :y
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had a similar problem recently with a ford sierra(yes really!!)i removed the head 3 times and changed various parts,but eventually i had to bite the bullet and remove the engine.all the piston rings were fubar.
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I've decided that regrettably, I don't really have the facils to remove an engine - I'm tempted to just keep putting oil in it..... ::)
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I've decided that regrettably, I don't really have the facils to remove an engine - I'm tempted to just keep putting oil in it..... ::)
Got insurance? Petrol can, match ;)
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Is it possible to remove pistons from the bottom? (I Really don't want to have to take the head off again) ;D
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well the only reason that i simply didnt just change the engine is where do you find one for a sierra?.however you do have that option,get another lump,throw it in the boot and pay a visit to sunny trowbrige where we have the finest engine crane available(fork lift) :y
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well the only reason that i simply didnt just change the engine is where do you find one for a sierra?.however you do have that option,get another lump,throw it in the boot and pay a visit to sunny trowbrige where we have the finest engine crane available(fork lift) :y
I might take you up on that offer Mr Sassanch. I could probably get my uncles garage, but it's a little cramped by comparison.
My only concern would be, seeing as this is so common with these lumps - it's quite likely If I bought another one, it would have the same probs ::)
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well removing an engine,re ringing and re installing is quite a tall order for one day BUT not impossible.you need to know if the engine is still standard ie not rebored etc.and yes the head will have to come off again
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well removing an engine,re ringing and re installing is quite a tall order for one day BUT not impossible.
I agree - I think that would certainly be a bit tight....!!
Maybe more appropriate across a weekend!
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must be frustrating :'(
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3.0 V6 astra, anyone?
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I am beginning to think that, if I had the opportunity to drop an engine into anything, I might pop one in the MV6, and slap an LPG kit on it ::)
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Just had a look in the plug holes - tops of pistons all look wet
I wonder if the valve guides might be worn? They felt OK when fitting the valves...
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Just had a look in the plug holes - tops of pistons all look wet
I wonder if the valve guides might be worn? They felt OK when fitting the valves...
It could be the head is porus or cracked? i know the red tops were bad for them going porus
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must be frustrating :'(
You still alive???? :D :D :D You must be working poor Ljay to the bone........ :'( :'(
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must be frustrating :'(
You still alive???? :D :D :D You must be working poor Ljay to the bone........ :'( :'(
;D
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James when you had the head off did you test the bores for wear or worn rings and have you done a compression test? I'm sure you know a lot more about these things than me but just thought that these things would be obvious to see if as bad as you say it is :-/.
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James when you had the head off did you test the bores for wear or worn rings and have you done a compression test? I'm sure you know a lot more about these things than me but just thought that these things would be obvious to see if as bad as you say it is :-/.
The only conclusive thing would be a leak-down test.
I compression tested it before removing the head, but when there is oil floating about, it can play with the readings a bit
A compression test will also tell you very little when it's burning oil, EG, it runs on 4, and has good compression on 4 - however that doesn't mean the oil rings aren't knackered, even if the two compression rings on each piston are OK....
Beginning to wish I'd re-ringed it while the head was off, but I Was so sure looking at the valve seats etc that it was stem seals, they were covered in oil :'(
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James when you had the head off did you test the bores for wear or worn rings and have you done a compression test? I'm sure you know a lot more about these things than me but just thought that these things would be obvious to see if as bad as you say it is :-/.
The only conclusive thing would be a leak-down test.
I compression tested it before removing the head, but when there is oil floating about, it can play with the readings a bit
A compression test will also tell you very little when it's burning oil, EG, it runs on 4, and has good compression on 4 - however that doesn't mean the oil rings aren't knackered, even if the two compression rings on each piston are OK....
Beginning to wish I'd re-ringed it while the head was off, but I Was so sure looking at the valve seats etc that it was stem seals, they were covered in oil :'(
When i said a compression test i did me now after you rebuilt it all but then as you say if compression rings are OK then you would still get a good compression test, does seem to be a PITA after all the work you've done.
With the luck you've had with doing you own motors recently i would stick to working on other people's cars :(.
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With the luck you've had with doing you own motors recently i would stick to working on other people's cars :(.
I've never had a problem with other people's cars, I do the jobs within my limits and consistently get excellent feedback...
In fairness, I don't think I've done anything wrong with mine, I've just had some bloody bad luck !!
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With the luck you've had with doing you own motors recently i would stick to working on other people's cars :(.
I've never had a problem with other people's cars, I do the jobs within my limits and consistently get excellent feedback...
In fairness, I don't think I've done anything wrong with mine, I've just had some bloody bad luck !!
From what I've seen of reports of your work I'm sure it just a spate of bad luck which will hopefully change in the very near future James, so good luck :y.
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Thing is - I have two cars needing engines
2000 Lovely, quite rare, retail MV6 Omega Facelift Estate 3.0 in (I think) nocturnal blue
2001, common Ashtray Estate 1.6 in Sales rep dark blue... ;D
Seriously, the Astra is a damn good car, but given a choice of which one to fix... :-X ;D
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Thing is - I have two cars needing engines
2000 Lovely, quite rare, retail MV6 Omega Facelift Estate 3.0 in (I think) nocturnal blue
2001, common Ashtray Estate 1.6 in Sales rep dark blue... ;D
Seriously, the Astra is a damn good car, but given a choice of which one to fix... :-X ;D
Have thought of working on them in disguise ;D.
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hmm just a mihute here!!1 you put it all back together and as soon as it got warm it started smoking again? assume you did the valve stem oil seals? if so then its possible the exhaust is full of oil from the previous problem? try running it for a good few miles nonstop down the mway or dual carriage way till it burns off maybe?????
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hmm just a mihute here!!1 you put it all back together and as soon as it got warm it started smoking again? assume you did the valve stem oil seals? if so then its possible the exhaust is full of oil from the previous problem? try running it for a good few miles nonstop down the mway or dual carriage way till it burns off maybe?????
Might have to remove and hang the exhaust upside down possibly? cant see the cats letting that much oil out in a hurry.........or remove a lambda, block the other end with a rag and see what comes out?......dealers love charging for new exhaust and cat after repairing a failure, jacks up the bill nicely........
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The cat on this beastie is "vertical" -
We are going out for the day today - I will give it a good rag down to the coast, and report back... :y
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Fingers crossed a good blast will help :y