yeah i am going to pick up a gauge tomorrow. Truck won't hardly idle now. What is a BAP? boost a pump? i don't think these have them. i believe there is just a high pressure pump in each tank. If pressure is low than it has to be a blockage in line then i would assume. You know i was wondering how it is possible to suck up trash large enough to clog the line because there is a filter on the pickup of the pump that has a really fine screen and it seems like it couldn't pick something large enough up. Thanks for any help. Gonna test pressure tomorrow and see what happens.