I have a 2006 dodge Cummings and I had a shop take out the injectors the feed tubes,they cleaned them and put them back in and know it will not start.they also put in a new cp3 pump and a high pressure swith on the rail.I am only getting 500 psi at the rail instead of 4500 psi and don't no why.. When I go to bleed the system it doesn't seem like there is not enough fuel going into the feed tubes can someone help please.........

 

start capping lines...