Xantia V6 Header Tank

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Post by xmexclusive »

Hi Jim

Short working life due the quality of the materials used for the cores.
Coolant mix quality plays a part too particularly if tap water is used for topping up. The standard heater core has the same problem.
On 2.5 XM's the typical rad life is around 6 years (4 with coolant abuse) and with two rads at £130 & £100 each you quickly learn to search out the better quality rads.

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Post by citrov6 »

how about one of those ally header tanks I see on ebay , they're not original equipment, but I can't see them splitting
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Post by f00lzz »

Mew header tank, new radiator all done... But I feel that I may have an air lock somewhere, the temp. gauge seems to rise quite quickly to the half way mark if in a traffic queue whereas before it never budged above the mark below half way.. obviously I have been able to bleed the rad from the bleed screw on the rad... and a certain amount from the heater hoses... does anyone have any other experience of bleeding the V6?
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Post by CitroJim »

Bleeding is a task on the V6..

Start (as with every job on a V6!) by removing the airbox.

Start engine, remove expansion tank cap. Leave it off.

Identify and open the two brass Allen headed bleed screws. One is on the thermostat housing (between the banks) and the other is on the front bank water distribution pipe by the coolant temperature sensor. Close them when the water runs clear of bubbles.

Do the same with the bleed cap on the heater matrix elbow.

Let the engine reach temperature with the cap still off. Repeat the above.

Allow the engine to heat until the fans run, still with the cap off.

Bleed all bleed points again.

Switch off. Leave cap off. Allow engine to cool right down. Top up if necessary and then and only then refit the cap.

This is more or less the official procedure...
Jim

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Post by f00lzz »

Thanks for that Jim... I'll try again.

Ian
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Post by f00lzz »

Yes, all sorted.. I'm running with the new header tank cap on the 'first stop' and all seems fine.. Also just had a new 'cat back' exhaust fitted, it's a Power Flow unit and I must say very impressive.
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Post by Clogzz »

the new header tank cap on the 'first stop'
Goood ! :D
If the coolant level drops after that, it’s caused by air in the system expanding.
Not the coolant simmering or expanding or overflowing.
2002 C5 2.0i AL4 230,000 km 76372389
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Post by f00lzz »

Thank you all...
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Post by HDI »

xmexclusive wrote:Standard plumbing ABS cement can often repair many of Citroens plastic items. Spanish radiators are usually bad news in Citroen cars.

John
Coolant expansion tanks are typically polyethylene or polypropylene. There is no adhesive I know of that will work on these materials. Plastic welding is the only method.
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Post by f00lzz »

I was told their was a good chance it would work... but by the cost saving over a new 'guaranteed' tank wasn't worth it IMO.
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