i take it it is endura de first check i would make is pipe going to /from turbo they get contaminated with oil then they go very soft and collapse on boost , when u turn the key from COLD do u hear a chattering noise from the pump if no there is a fuel valve on the front of the pump that packs up its an expensive little bugger under a rubber cover with two wires coming out of it [i assume yr pats light is not going mental ]if it is check the wiring that runs on top / next to the radiator ,or even as said turbo