jamal posted:

Well if there's a hole in the brake line your can't build any pressure, and the fluid all leaks out. Thankfully with a dual diagonal system you can still stop a few times.

I've told the story before but this truck has had a line fail and be patched by the dealer twice, and never properly bled because they were afraid to touch the rusted bled screws, and told my uncle he needed all new calipers, a booster, and an MC, while offering to do nothing about the lines "because that would be a lot of work and expensive." I replaced the screws and bled the brakes and they work fine.