Papers filed with the U.S. District Court in New Jersey claim Ford was aware that the linings of F-Series pickups and E-Series vans built between 1999 and 2008 could “separate and flake-off,” which could clog the fuel lines and lead to loss of power or stalling. Plaintiffs claim Ford issued a “secret” technical bulletin to dealers advising them of the problems, but customers were not informed. It is not clear if federal regulators are looking into the issue as it could be considered a potential safety hazard. There is no immediate comment from Ford.