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Author Topic: Advice please :)  (Read 2069 times)

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Entwood

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Advice please :)
« on: 14 October 2007, 16:43:02 »
A friend has a W reg 2.5 CDX estate, I've not yet seen the car but by telephone this is the situation...

Symptoms are ... leaking water at a GREAT rate, apparently leaves a slug trail when moving !! Oil in header tank, water on dipstick, mayo on oil filler cap, and when running a "ticking" sound.

I don't know how many miles it has done since the problem started, but I do know his wife drove it home whilst leaking water at a great rate.

Local garage (none-Vauxhall - just a village garage) has diagnosed an irrepairable head gasket failure and quoted £2200 for a new engine !!!!!!!!!!!!!!!

My thoughts are possibly an oil cooler failure ?? and the "ticking" caused by valve lifters with no decent oil in them ??

I'm hoping to get over to him during the week and put a compression tester on it, does anyone have any other thoughts that may help ??

Regards.. Entwood
« Last Edit: 14 October 2007, 16:43:55 by entwood »
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JamesV6CDX

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Re: Advice please :)
« Reply #1 on: 14 October 2007, 16:45:46 »
edit - how much water on dipstick?

HG failure is rare, but if there's a lot of sludge on the stick then it's possible...

A compression test may not show a HG fail on one of these.
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Re: Advice please :)
« Reply #2 on: 14 October 2007, 17:09:30 »
The head gasket is very unlikly to have failed on the v6 but as james said it could have. i WOULD pressure check the cooling system first to try and find the leak, then drain and flush the system with forte, refill and drain untill you get most of the mayo in the water out, then pressure check again. if you dont see a leak then suspect the oil cooler. the ticking will almost certainly be the valve lifters lacking oil and a system flush and change with filter should  cure this.  Do these first before you go stripping heads off. There is also no such thing as irripairable head gasket failure. the bloke just didnt know how to do it, or what was wrong.
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JamesV6CDX

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Re: Advice please :)
« Reply #3 on: 14 October 2007, 17:14:47 »
Either that, or couldn't be arsed to fix it, hence over pricing.....
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Andy B

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Re: Advice please :)
« Reply #4 on: 14 October 2007, 17:15:34 »
Quote
...... the bloke just didnt know how to do it, or what was wrong.

Or didn't want to do it. When the DIS & cranck sensor packed up on my car I asked for opinions from a few of garages, one even said 'we don't work on the V6 Omegas .... they're too complicated'  :o   :-?  :-?


(James .....is that acase of like minds etc or some other proverb?  ::)  ::) )
« Last Edit: 14 October 2007, 17:17:11 by Andy_B »
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JamesV6CDX

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Re: Advice please :)
« Reply #5 on: 14 October 2007, 17:17:28 »
Quote
Quote
...... the bloke just didnt know how to do it, or what was wrong.

Or didn't want to do it. When the DIS & cranck sensor packed up on my car I asked for opinions from a few of garages, one even said 'we don't work on the V6 Omegas .... they're too complicated'  :o   :-?  :-?

Before I was competent working on them, I asked one garage for a cambelt change, and was told exactly the same thing.

Too complicated...

Pay peanuts, get monkeys!!
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Kevin Wood

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Re: Advice please :)
« Reply #6 on: 14 October 2007, 18:56:11 »
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'we don't work on the V6 Omegas .... they're too complicated'

Read: "I don't work on Omegas cos I'm a total gibbon" Honestly! Its a car, you call yourself a mechanic... >:(

At least he was honest and told you it was beyond his capabilities before he made a mess of it.

Kevin
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TheBoy

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Re: Advice please :)
« Reply #7 on: 14 October 2007, 19:14:54 »
Sounds HG to me.

I am guessingm due to coolant leak, they have cooked it, destroying HG and possibly heads...
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Entwood

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Re: Advice please :)
« Reply #8 on: 14 October 2007, 19:50:23 »
Update 1.

Spoke to him a while back ... got him to start it up with full header tank and correct oil level, ran it for 15 minutes whilst telling him do do things ....

"Ticking" noise - loud enough to hear on mobile phone stopped after 90 secs. No sign of any water leak for 5 minutes. Got him to remove header tank cap after 5 minutes, he says there was no pressure in there at all, after 7 minutes the water in the header tank started to "move" - I assume as thermostat opened - at about the same time he said water had started to appear - slowly - from right at the back of the engine.. he was unsure where.

Now the engine started instantly, and sounds like it is running very smoothly, I got him to blip it to about 2500 a couple of times, and by phone it picked up well and no unusual sounds. I don't have any kit to "pressure test" the cooling system.. is there any other way ?

Could the oil/water problem be an on-going one he's never noticed.. seeping oil cooler (still needs changing but not totally fubarred) and he's just had HBV fail on him ?? or am I clutching at straws ??
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TheBoy

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Re: Advice please :)
« Reply #9 on: 14 October 2007, 19:53:22 »
Compression test the cylinders.
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TheBoy

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Re: Advice please :)
« Reply #10 on: 14 October 2007, 19:57:28 »
Actually, that doesn't sound like HG.

Can you confirm there is defo oil in heade tank?
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Andy B

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Re: Advice please :)
« Reply #11 on: 14 October 2007, 22:00:29 »
Quote
Actually, that doesn't sound like HG.
 ........

Agreed. CHG failure would've presurrised the header tank.
« Last Edit: 14 October 2007, 22:00:45 by Andy_B »
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Entwood

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Re: Advice please :)
« Reply #12 on: 14 October 2007, 22:24:12 »
Quote
Actually, that doesn't sound like HG.

Can you confirm there is defo oil in heade tank?

Not until I drive over during the week ...  I'm going by what I'm being told .. :)  I'm really starting to think HBV and "dirty" coolant, and I know the car only does mostly short runs... 20 odd miles am / pm so the mayo/water on dipstick  could just be condensation.

Do HBV valves leak at constant rate? or is it dependant on coolant temp/temp selected on heater ?
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TheBoy

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Re: Advice please :)
« Reply #13 on: 14 October 2007, 22:29:28 »
Quote
Quote
Actually, that doesn't sound like HG.

Can you confirm there is defo oil in heade tank?

Not until I drive over during the week ...  I'm going by what I'm being told .. :)  I'm really starting to think HBV and "dirty" coolant, and I know the car only does mostly short runs... 20 odd miles am / pm so the mayo/water on dipstick  could just be condensation.

Do HBV valves leak at constant rate? or is it dependant on coolant temp/temp selected on heater ?
Tends to be dependent on temp in my experience
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Entwood

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Re: Advice please :)
« Reply #14 on: 14 October 2007, 22:35:42 »
Quote
Quote
Quote
Actually, that doesn't sound like HG.

Can you confirm there is defo oil in heade tank?

Not until I drive over during the week ...  I'm going by what I'm being told .. :)  I'm really starting to think HBV and "dirty" coolant, and I know the car only does mostly short runs... 20 odd miles am / pm so the mayo/water on dipstick  could just be condensation.

Do HBV valves leak at constant rate? or is it dependant on coolant temp/temp selected on heater ?
Tends to be dependent on temp in my experience

So the no leaking when cold up to very large leak/coolant level warning when stopped after driving 30 miles to the shops makes sense then. I think I need to see this beast now but an HBV is fast becoming my guess. Methinks I'll print a few pages on "how to change an HBV" ....

:)
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