I’ve traced a leak into the boot of my Mk1 from a section of the boot seal, after eliminating a failed rain rail and light seal, on the near side, inboard of the rear light.
The seal itself isn’t split or anything, so I assume its lost a bit of shape at that spot. No leaking anywhere else. Has anyone just refitted the seal in a different spot, so the iff spot is, say, just above the number plate? I’m assuming water coming off the forward side of the boot lid is draining away in the gulleys just abouve the rear lights, and that the seal above the number plate isn’t doing all that much. A new seal from Mazda etc is a fairly hefty £60-70.
“Scientific” checks with French chalk were quite illuminating.
Semi-quantitative because its difficult to evenly distribute the chalk on the seal.
Subjectively, less chalk seemed to be deposited on the passenger side (the leaking side) than the drivers side (no leaks). You can see a hint of something going on here:
Another thought, I have a Rod Millen boot spoiler (wish I never had it tbh). The boot lid torsen bars have been adjusted to stop the boot lid falling on my head (even so, its marginal). I wonder if this leads to side effect in the locked position?
