hey guys

i have a cat c5000, it will crank over no problem and try to start before almost turning back on its self. odd part is if you choke the intake manually then it will fire and run great. I have spark, i have fuel and the fuel solenoids appear to be working good, the though that choking it will lead to it starting is sending me to believe i don't have enough fuel going through the intake. has anyone run across this? again it runs like a top once started, idles good and revs beautifully. but no codes and im not here to throw parts at it till it works so anyone who has seen this let me know. also fuel pressure sensor is reading in range.