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Author Topic: Coolant leak when car stood for a few days.  (Read 6209 times)

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addy

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Coolant leak when car stood for a few days.
« on: 17 June 2018, 15:25:16 »

It probably has already been answered on here but I cann't find it. So here goes, I have a 02 2.6 that seems to lose coolant from the coolant tank so you can see the top of the thing inside the tank, after standing for nearly a week enough to put on the coolant low warning. After putting the ignition on without starting the car, pressing the brake to remove the check message, it is replaced by the coolant warning one.  I have looked for physical signs both inside the car up under the dash, in the footwells near the HBV as best I can using my hand to check for leaks. Smelt the coolant in the coolant tank for petrol smell nothing, just had a oil change and no water contaminants in it. No oil contaminants in the coolant. The car doesn't overheat and stays at normal temperature, also heater works on hot and cold no problem. I have looked underneath the coolant tank incase it is leaking from underneath, but nothing can be seen. No white or steam coming from the exhaust when the engine is running.

I know when the car is turned off there is no vacuum, so would the HBV be allowed to leak, because of no Vacuum going to it(if that makes sense)? There is no sign of escaping water from it, when the car is running.

Thanks for any replies. I do have a HBV to replace it, I just thought I would ask more knowledgeable people.
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Drives 1995 2.0ltr CD Estate.  2002 2.6 CD saloon

Doctor Gollum

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Re: Coolant leak when car stood for a few days.
« Reply #1 on: 17 June 2018, 15:39:38 »

Did you bleed it following coolant change?

Temp to HI on both sides, fan manually down to one bar. Top up. Let it run with the cap off until the fans kick in. Top up. Refit cap fully. Run until fan kicks in. Recheck level.

Try that and report back. If it's still dropping, we can address that later :y
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addy

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Re: Coolant leak when car stood for a few days.
« Reply #2 on: 17 June 2018, 16:47:31 »

No will try that thank you.
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Sarabine

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Re: Coolant leak when car stood for a few days.
« Reply #3 on: 20 June 2018, 11:09:12 »

This site is a great site with lots of knowledge for me to learn.

addy

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Re: Coolant leak when car stood for a few days.
« Reply #4 on: 15 July 2018, 09:35:46 »

Doctor Gollum. I thank you for your suggestion. I did as you said about bleeding it. When the fan kicked in it dumped loads of coolant out along with loads of air. But still the level had dropped the next day. So I did it again this time, I used a funnel in the neck of the coolant tank and filled it until I could just see it inside the neck of the funnel, then squashed the radiator hoses while the car was running, with the heater settings as you said. The amount of air still in there was amazing, it took three goes to get it all out and nearly 3ltrs of new coolant, and waiting for the fan to keep kicking in and keeping the level topped up all fun. I have checked the level for the last two days and it is on the full mark, also the radiator pipes cannot be crushed so easy like they were before the burping.  The heater in the car is really hot aswell. If the level stays ok for a while, then I am going to flush the system, as the coolant didn't look 100% the person who had it before me had used Blue, the car was built in 2001 but registered in 2002, so would it use red or blue?

Thank you, to all of you who replied.
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johnnydog

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Re: Coolant leak when car stood for a few days.
« Reply #5 on: 15 July 2018, 12:42:25 »

The coolant used should be red. Original Vauxhall coolant is red and should be mixed 50/50.
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addy

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Re: Coolant leak when car stood for a few days.
« Reply #6 on: 15 July 2018, 15:58:06 »

Thought it might be red, will wait for a bit longer to see if the coolant loss, was just air in system. If it was just that will get coolant changed.

Thanks
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tigers_gonads

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Re: Coolant leak when car stood for a few days.
« Reply #7 on: 15 July 2018, 21:46:27 »

The red stuff is OAT which iirc is what should be used on Omega's.
Personally, I haven't got a trade card anymore and don't see the point of paying for diluted stuff so I buy OAT red concentrate and mix it myself  :y
Never had a problem  :y
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BazaJT

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Re: Coolant leak when car stood for a few days.
« Reply #8 on: 15 July 2018, 22:04:01 »

Pretty sure you can get red in both OAT and non OAT,but wouldn't swear to it without looking it up.I just use the cheapo blue stuff at present it does well enough for an 18yr old car.People keep trying to sell me 10yr stuff but whether I've got 10yrs left-debatable-the car certainly hasn't,so I'm not buying that!!
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Nick W

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Re: Coolant leak when car stood for a few days.
« Reply #9 on: 15 July 2018, 22:15:04 »

one of these old heaps will be so incontinent that insisting on long-life coolant is a bit pointless ;D


If it's got red in it, then use that. Mine came with blue, and that's what I use in it.
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Doctor Gollum

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Re: Coolant leak when car stood for a few days.
« Reply #10 on: 15 July 2018, 22:17:13 »

Ah yes, good old servicing by top up...  :D
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TheBoy

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Re: Coolant leak when car stood for a few days.
« Reply #11 on: 16 July 2018, 17:45:26 »

one of these old heaps will be so incontinent that insisting on long-life coolant is a bit pointless ;D


If it's got red in it, then use that. Mine came with blue, and that's what I use in it.
I use red, just so I only have to change it every 3 years on so, rather than annually.  Cost is about the same, and the effort is the same, and I'm a lazy bastid :D
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Nick W

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Re: Coolant leak when car stood for a few days.
« Reply #12 on: 16 July 2018, 17:58:33 »

I use red, just so I only have to change it every 3 years on so, rather than annually.  Cost is about the same, and the effort is the same, and I'm a lazy bastid :D


I've never seen the need to change it annually, so don't bother.

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addy

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Re: Coolant leak when car stood for a few days.
« Reply #13 on: 16 July 2018, 18:43:40 »

Thanks for all the replies, I will stick with the blue coolant seen as that is what was in it.  I checked the level of fluid last night and it was still on the full mark, after 3 days. The wife drove it last night and today and said no there were no problems, and the coolant warning didn't come on. I went to go out in it and the coolant warning was back on, when I checked the level it was just below the white dome thing inside the coolant tank, would this just be the car finding its proper level, now it has had a good drive? There is no water under the car, where it has been parked, also listened for anything that sounded like water escaping under pressure and nothing.

The coolant is still the same as it was before, no oil in it. And no water on the dipstick.
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terry paget

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Re: Coolant leak when car stood for a few days.
« Reply #14 on: 16 July 2018, 19:35:00 »

Are you sure it is not a leaking radiator, like I suffered recently? A small leak in the header tank will be concealed by the radiator cover plate, and if only a pinhole will leak only when hot and under pressure, and not be obvious.

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