i have a 93 mustang lx that has a motor swap it now has a 91 5.0 ho and it will not start.. it turns over all day long but will not start up we have checked spark fuel pressure power to the coil and changed out the gas bc the car sat for a while.. and it still wont start.. any ideas thoughts anything please it will help.. o and it will run on starter fluid for like a sec and i replaced the comp like maybe a year ago so i dont think its that.. im so confused!