The engines in no codes I used the voltage drop kit. It runs for about 20 seconds and won't idle it just back fires and stalls/ diesels. I had egr codes and cps codes but I hooked up the egr stuff and bought a new cps sensor and the codes went away. I'm running vias and don't think I have any leaks I ran it how it was on the de engine with the vacuum cylinder. I'm completely lost as to why it won't run right or idle. I've looked all over for answers any ideas feel free to leave a comment. I also changed the fuel pump assembly. And there is no block in the fuel line.