So
The problem child.
Total mileage 37,000. The last three years it didn't move an inch.
It has a problem, heavy traffic and the brakes pedal goes solid, the brakes come on, let it cool and they're free again. I've gone over the calibers, all good. I've replaced the brake servo and master cylinder (used unit)
I've even followed the recommend bleed the brakes procedure.
I've run it up to Glasgow, 800 faultless miles, but a day in London and it gets defeated by traffic on the Chiswick roundabout.
Don't think it's a faulty vacuum hose & I've cleaned the gunk from the pedal rod, fluids all clear (and new) system all flushed through and filter good.
Only recent work was two new cables for the handbrake, but it managed fine for 150 miles before the Chiswick incident.
I've replaced a few age related issues; new belts, new radiator, new air condenser, new tyres, plugs and packs, so it owes me a few quid, I don't want to give up on it yet.
Any ideas?