Citroen C4 Picasso coolant leak name of part

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lotrjw
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Citroen C4 Picasso coolant leak name of part

Post by lotrjw »

As per the title I have a coolant leak on a Citroen C4 Picasso, with a friend I have tracked the leak down to a pipe on the right hand side of the engine that comes out of the back of the water pump thats connected to the out pipe from the radiator.
I would like to know more about where the pipe goes and what its called. A diagram of where it connects to the other end, would also be good if there is one available.

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GiveMeABreak
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Re: Citroen C4 Picasso coolant leak name of part

Post by GiveMeABreak »

Pop your VIN up so we know what variant you have - systems differ between engines and models.

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Re: Citroen C4 Picasso coolant leak name of part

Post by RichardW »

From previous post VF7**************[VIN obfuscated, can be read by forum staff]

Here are the hoses:
c4pic hoses.JPG
This is a bit confusing as it shows 2 pipes at the LH side - but the part numbers show yours is fitted with a 2 part hose, items 3 and 4.

And the manifold on the back of the block to the water pump:
c4 pic w pump.JPG
Not sure which bit you are referring to? When you say right, do you mean as you look at the engine, or as you are sitting in the car? I think you perhaps have the thermostat confused with the pump - there is no hose from the rad to the pump - both rad hoses are connected to the stat housing.

lotrjw
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Re: Citroen C4 Picasso coolant leak name of part

Post by lotrjw »

OK I have marked this image:
c4pic hoses with arrow.JPG
with a red arrow about the area where the leak is.
The leak is on that corner as the pipe goes round the back of the engine.

When I said right its when your looking head on, sorry just realised thats not conventional way round, its near side (on RHD vehicle as Im in the UK) very close to the battery and under the fuel pump.

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Re: Citroen C4 Picasso coolant leak name of part

Post by RichardW »

OK... so that's item 2 on the second pic I posted. Which comes in at £110. However, I can't imagine how you would go about changing it - engine out?

There is a link on the page (the LE2015 in red) which suggests instead:

1336 X3 Propose :
- 1336 V3(1) + 1340 72(1) + 6980 44(1)

Which is a different design of manifold, and only £80.

lotrjw
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Re: Citroen C4 Picasso coolant leak name of part

Post by lotrjw »

RichardW is the whole pipe actually needed though or can I just get the part that goes round that corner of the engine? Does it have a joint round the back somewhere, which would mean just getting a bit out but not the lot?

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xantia_v6
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Re: Citroen C4 Picasso coolant leak name of part

Post by xantia_v6 »

Are you sure that the leak is actually from that pipe, and not a leak from the thermostat housing that is running downhill onto the pipe that you have identified?

lotrjw
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Re: Citroen C4 Picasso coolant leak name of part

Post by lotrjw »

There is a definite split in that pipe.

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Re: Citroen C4 Picasso coolant leak name of part

Post by RichardW »

If you search on the part no on e-bay, there are quite a few around £40. There might be a joint in the middle looking at the pics, but given the (lack of) access I imagine it will be just as 'easy' to remove and replace the whole lot. I can't see any instructions, but it books at 6.1 hours, so it's no walk in the park! I suspect at least the OS drive shaft will need to come out, and possibly the sub frame, and quite likely the EGR valve and cooler. Good luck!!

buskmann
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Re: Citroen C4 Picasso coolant leak name of part

Post by buskmann »

I think I have the same issue on my 2007 Peugeot 307 1.6 HDi. The air filter box has chafed a hole in the water pump to engine coolant pipe. The pipe is made of some kind of hard plastic (not rubber-like).

As it it time-consuming (and the not cheap) to change the pipe, has anyone had success with a temporary repair? I tried vulcanizing tape, but it did fix the leak.

A couple of pictures:
P1020054.jpg
P1020083.jpg

lotrjw
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Re: Citroen C4 Picasso coolant leak name of part

Post by lotrjw »

Thanks for the help of people on here with this part, I found an independent mechanic who was able to fix the part onto my car at a very reasonable price.

buskmann
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Re: Citroen C4 Picasso coolant leak name of part

Post by buskmann »

I glued my coolant hose in situ. Still tight one month after.