05 chevy trailblazer 213,000 miles auto trans no codes/cel light but i still scand it has new fuel pump and filter in tank i can hear pump come on for 10 seconds then shut off there is no inline filter from pump to engine i have checked #41 relay and all other relays and fuses under hood and the middle seat. still no fuel at fuel rail or at the fpr. i need to know why that is and what the black box is on top of the fuel tank in ran before this like it was misfiring and did not want to go so i cut it off and towed it home now won't start theres no pressure on my pressure gauge thanks
disconnect the line at the fuel tank and see if you get flow there. What kind of pump did you buy?
has about 55psi acdelco. i looked on line and theres should be a filter right after the tank to the engine but theres not almost looks like the lines have been modafied
try to blow through the line with compressed air