This 2000 7.3 powerstroke was running good and then started missing and now it will not start turns over fine at one time we finally got it cranked on eather now it wont the tach isnt working so I replaced the camsensor with 2 different ones and still no tach and still no start,does this have a electric fuel pump in the tank? I think I can hear it running can someone help me with this? Had a mechanic put it on the computor but he said it wouldnt read right unless it is running. HELP!!!!