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The problematic rusting pipe in the cooling system
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Tjensen   
Mon Jul 01 2024, 11:41am

Joined: Jul 17 2012
Member No: #954
Location: Bergen
 I changed this tube (6466 WJ) in 2017 and now it is again rusted and leaking heavily. I will try to drive the 100km to my trusted garage with many refilling stops. They will try to replace the rusted part with a hose. Any idea for getting the part ? Any thoughts on the "hose solution" ? The leak is just above the left driveshaft. The part for the 3.0 Hdi is not the same as the one for the 2.7 Hdi, our part is more complicated (two smaller tubes)

The car is 2010 with 250 000 km
C6Dave   
Mon Jul 01 2024, 05:52pm


Joined: Oct 01 2009
Member No: #1
Location: Northumberland
 Looking online I found an image of the pipe as seen below.

Looking at it I can't see an issue with using some hose to replace the 'rusted' pipes if you cut them at 'A' 'B' & 'C' leaving the brackets in situ to secure them back to the car and the original connectors to secure it all back in place?



How difficult it will be to remove the whole part to do it though, I don't know.
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Hattershaun   
Tue Jul 02 2024, 07:11am

Joined: Dec 19 2010
Member No: #320
Location: Bedfordshire, UK
 The Citroen specialist workshop that I use (B.L.Autos, in the U.K.) have repaired this pipe on many C6 (mainly 2.7HDi with the single pipe) inserting a piece of rubber pipe, securing with jubilee clips, having cut out the rusty metal section. Never had a failure thereafter.
Tjensen   
Tue Jul 02 2024, 09:02pm

Joined: Jul 17 2012
Member No: #954
Location: Bergen
 Thanks for good advice !! I will hand it over to my garage, and include C6Dave suggestions and picture. (Driving 100 km with a big leak went well/no overheating with 4 refill stops and 25 liters of extra water !)
Tjensen   
Mon Jul 08 2024, 08:16pm

Joined: Jul 17 2012
Member No: #954
Location: Bergen
 Thanks for help ! My local garage (Voss, Norway) used 2 hoses for replacing rusted parts of the complicated tube (and got the advice from Dave) After 500 km everything OK, no leakage, normal temperatures etc
cruiserphil   
Thu Aug 08 2024, 05:37pm


Joined: Jan 24 2010
Member No: #38
Location: Celbridge
 Hello Tjensen,

I was out of commission for a while due to eye surgery and have just read you post today. I replaced the two rusted sections with flexible hoses. A bit more awkward than the 2.7 because of the bulkier nature of the twin piping. Cutting the pipe assembly into two sections made it easier to remove. (I wanted to remove the assembly to bead the cut ends of the pipe). Then reinstalled the two sections and fitted the flexible hose. No issues at all. And with the low coolant warning reinstalled no more stress about losing water and not knowinhg.

Best regards,

Phil C.
Tjensen   
Fri Aug 09 2024, 04:08pm

Joined: Jul 17 2012
Member No: #954
Location: Bergen
 Thanks for good advice ! My garage at Voss, Norway did a successful "double bypass" surgery like you explained and this is now 2500 km ago .
 

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