Runs great during the day, acts like it has air in system after it has set up for several hours will spit and sputter blowing black smoke that is with the gas pedal on the floor to try to start it. Even with the block heater plug up still will not start right up. Has always started up just fine

. See if this link on troubleshooting diesels helps:

https://www.askmehelpdesk.com/cars-t...ml#post1415281

. Read this link on black smoke:

https://www.askmehelpdesk.com/cars-t...ml#post1921427