Just got a good deal on a 03 F250 4x4 AT with 136,000 miles. Truck just had $6500 in work including 2 new heads, bolts and gaskets, egr delete, new oil cooler, new glow plugs, 4 new injectors, new pulleys and belt, and new alternator. After less than 500 miles it blew a head gasket again, its pushing coolant out the degas bottle. No major repairs in the previous 20000 miles. No tuner, rest stock. So studs and gaskets are on order. What I am concerned about is that the truck starts harder than normal and has a noticeable miss and lack power, lots of white smoke. It hardly has enough power to move it into the shop. I tested the FICM and it has 48 volts starting cranking and running. Questioning if the Turbo is stuck or not boosting with the lack of any power or if it stuck in a high boost and took out the head gasket both times. I am hoping I dont have a high pressure oil pump weak or sticking injectors. Any thoughts? Tearing into it this weekend with cab on.