18 replies to this topic

[rae07]

Quite sure it is coolant from the blue tint.

It was leaking quite a lot previously and surprised that it could stop without significant coolant depletion.

Below is a video of the leak.
https://file.io/xBwfKp1rQCIa

No file there. Load it onto YouTube.

Uploaded on youtube.

https://youtu.be/XeQEJ9895zs

[rae07]

As the system is essentially closed, it needs air to be let in to let it leak or some pressure in the system.

Pressurise the system and have a look to see if you can identify where it's leaking from. There are commercial tools for this, but if you have a hand or foot tyre pump these often have a chuck on them that has a rubber in them and a lever to lock them on the tyre valve. These will also fit on to the overflow on the Radiator, you may need a different Radiator Cap to get a seal where you need it, but you can use this arrangement to pressurise the system. Ideally use a pump that has a gauge, take it up to 15 PSI.

Did not think of the footpump method. I ended up running the car to build up pressure. Car ran for 15mins but no leak.

Question, other than the overflow tank, are there other outlets for excess coolant to be dissipated?

[Spider]

Question, other than the overflow tank, are there other outlets for excess coolant to be dissipated?

 

 

The early Minis had no overflow tank. If your Mini has one, that's all there is.
 

[rae07]

I have sometimes found that when reusing a hose that if the jubilee clip is not in the exact same position the hose is slightly distorted and can leak.When hot it is more pliable and seals,just a thought.Steve..

To update, I tightened up the bottom hose and it seems to resolve the prob. No leak after 20mins of drive.