Hi there, I have a Y reg boxster that I thought I had fixed everything but it looks like I have a leak. I replaced the water/coolant tank last year as than went wrong as they often do. I remember this leaked to one side of the car. I went for a spin today to get the cobwebs out and when I got back I stayed in the car for a few minutes on a call (so longer than usual) when I got out I saw fluid running out from under the car. I cant taste or smell anything so assume its water. Its in the middle of the 2 rear tyres. Different from the previous problem plus the boot is dry. I laid down on the ground to look and it seems like there is a flap bang in the middle of the car and fluid is seeping from there. One other thing (don't know if it makes any difference or not) I topped up the water tank last week. On checking it today I realised I hadn't replaced the cap (yes I know) so I don't know if this would have any effect? Water level is fine and I put the cap on this time. Yes I'm blonde. I just went back out now (6 hours later) and can still see the fluid on the ground. I would have assumed water would have disappeared by now. I've put a plastic container under where the leak is to hopefully collect anything overnight to see if I can tell if its oil or water. There is no more dripping though. Can anyone shed any light on it before I get mugged off at a garage please?
Mid rear boxster leak - Page 1 - Boxster/Cayman - PistonHeads UK
Add to repair workspace
Discussion summary
YOUR RESEARCHMid rear boxster leak - Page 1 - Boxster/Cayman - PistonHeads UK
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Read captured repliesInsufficient extracted evidence does not mean there is no answer in the original discussions.
1 matching discussions · 5 captured posts examined · 1 partial discussions
Coverage and how to read this overview
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
- PistonHeads: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Are you sure it's not just condensation from the a/c system? Many cars, including these, can exhibit an incontinence problem worthy of Victor Meldrew. If it is engine coolant it will feel greasy or slippery to your fingers and be slow to evaporate off the ground.
I didn't have the air con on.
Was there a condensation on the trunk, after or during the leak? If so, it might be the cap needs replacement. Also the air bubble might cause this issue, or basically there is something seriously wrong in the coolant system that the water/coolant do not circulate properly after heating. If it's a water pump failure, the whole coolant dumps itself less than a minute!
Water can also piddle out of the exhaust.
This is a source reference. Confirm exact model applicability in the original material.