02 duramax need help
 

hi i have a stock 02 getting a code p0087 black smoke when stepping on pedal no power starts right up in the am cold was getting harder to start now wont start when warm shifts weird goes in to limp mode unless i let off pedal then will go ok i did mas ail flow sen i changed fuel filter no collapsed lines so lift pump injectors what do i need to fix this pos help please thanks

sounds like the cp3 is starting to fail, cannot keep up with the rail pressure demands.