I have just finished putting a 2.5 in a 4x4 s truck. the prob is it won't pulse fuel from the injector not the first 5 seconds nada! I've changed the injector with a known good one,checked the fuel pump, working and pumping and even changed the computer and F.P. relay(why i dunno) with ones that were on a good running truck. It still wont run ! I can pour a lil fuel in it it fires right up just got to get this friggin injetion stuff to work. Any help will be appreciated.