I'm hoping somebody here has seen this. Working on this truck for a friend and it's got a strange problem I haven't seen before. It's a 2000 P38 with Bosch Engine management.
Truck runs out of gas when the gauge says 1/2 tank. I ran the pump with a jumper until it starved at 1/2 tank. Pulled the tank and it looks to me like as long as the fuel level is above the white housing in the pics the pump is fine. But once the fuel is below that white housing, the pump can't pull fuel off the bottom of the tank. I'm hoping some BMW guys might have seen seen his before.
The fuel pressure regulator dumps off its extra fuel into the same area the fuel pump inlet sits. So could the regulator be the problem? It's replaceable .
Truck runs out of gas when the gauge says 1/2 tank. I ran the pump with a jumper until it starved at 1/2 tank. Pulled the tank and it looks to me like as long as the fuel level is above the white housing in the pics the pump is fine. But once the fuel is below that white housing, the pump can't pull fuel off the bottom of the tank. I'm hoping some BMW guys might have seen seen his before.
The fuel pressure regulator dumps off its extra fuel into the same area the fuel pump inlet sits. So could the regulator be the problem? It's replaceable .