Return pipe clips

[PaulGover]

I recently had to replace my expansion tank (aka header tank, the one you put water in) because there was a leak at the vent hose spiggot (the little one on the left, by the bleed screw). This is a well-known failure point that's been covered before in these forums. Indeed, this is the second time this car has had a new expansion tank in 16 years, 125,000 miles.

It struck me that the vent hose might be missing a clip. There's one directly behind the expansion tank just after the return bend at the LHS, and what looks like a mounting point for a clip just behind the next right-angle bend on the RHS, and I wonder if a clip has broken and fallen off. That would lead to the vent hose vibrating, and might be what caused the spiggot to start leaking.

Actually, looking more carefully, I can see the mounting point is actually the remains of the broken clip. Case solved.