fuel pump, or idm? need help fast
ok well yesterday i was running low on fuel, i want to say i have had it lower but it started sputtering and lost pretty much all power. i cut it off immediatley before it could run out (if low fuel was the problem). i then towed the truck to gas station and filled up, it took every bit of 26.2 gallons according to the pump. i then primed the pump about 3 times with the key and fired her up, it was sputtering and chugging just as bad as before, also when i would apply throttle it would blow white smoke. it idled about 3 min. before it cut it self off and then would not start again. when i turn it over it makes a knock like its trying to fire, the gauge reads oil pressure and the it has a brand new starter and optimas so its turning over every bit of atleast 100 rpms. my question to yall is what could this possibly be?? i replaced the lift pump/frame mounted fuel pump about 20 thousand miles ago and i do not know how to check the idm. any and all help is greatly appreciated.