It's not unknown for older brake hose to deteriorate internally and collapse and/or fall apart so as to block the hose. This can occur even if the outer hose surface still looks good.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.