small water leak, but from where!?

[moojw]

Hi all, I'm hoping someone might be able to help me find a specialist in water systems on the T25 DG 1.9

I seem to lose about half a litre of water on a 50 ish mile trip, I changed a couple of suspect hoses and some jubilee clips, and I've had a pressure test, but nothing showed up on the test and I'm still losing the water.

I just want to take it to someone that can identify the issue and have it resolved, but I don't know of anyone trustworthy.

I'm in the Haywards Heath, Sussex area RH16

Oh and I put a stop leak fluid in and that made no difference either 

any help would be very much appreciated 

[maxstu]

What year van. Early or late cooling system?

It is not recommended putting stop leak fluid in these vehicles. It may cause more problems later on.

Which pipe did you replace? And did you bleed system properly, using the burp procedure at the end?

Gets some clean card and spread it out under van. Start it up and let it idle until radiator fan fires up.
Turn off engine and wait for it to cool down. It should leave traces of coolant on card.

Then you can identify area it is leaking.

[jrt]

If you get a super bright torch and get into the engine bay and under the van ( front/ rear) you’ll see if there’s any blue/ pink/ white crystallisation where there’s been any leaking /spraying.
David.

[moojw]

Hi Maxstu, it's a 1985, I have changed the pipe to the expansion tank, I've changed the intermediate pipe between the long plastic pipes to the radiator and a number of rusty looking clips.

As for bleeding I have bled the van so so many times, with it raised in different directions, with caps off and with caps on for rad air, all the versions I have seen, even if I doubted some of the recommendations on You Tube, I thought what the hell I can't lose so I did it.

I'll try the card system though, I've not left it running until the fan kicked in and then let it cool, so I'll give that a shot, it'll be end of Aug before I get the chance on that but I'll be back to post my findings.

Thanks 

[moojw]

If you get a super bright torch and get into the engine bay and under the van ( front/ rear) you’ll see if there’s any blue/ pink/ white crystallisation where there’s been any leaking /spraying.
David.

I'll give this a go also, I've been under quite a few times, but once or twice more won't hurt. cheers