04 f150 will crank over but wont start.
so I just finished installing a new A/C compressor on my 5.4l since the last one was frozen and wouldn't allow my truck to start up. now since I replaced it and put the truck back together it started and ran 3 different times the 3rd time I went out and put r134a into my ac system then the fourth time I went out to start the truck It will crank over but not start easily and when it does start I have to give it gas or it will die. if I sit there and crank it I will get a loud clunk from the starter. I am out of ideas and need some help.