hard starting
 

if i let my 1999 dodge 3500 diesel sit over night it wont start inless i hold the key for about 20 seconds then when it does start it runs rough for about 2 seconds:argh: then smoths out and drives just fine i have checked for fuel leaks none found that i can see had a new starter and batteries put in by cummins 2 weeks ago problem started about a week ago new fuel filter installed and oil change done my lift pump is a fass ddrp i get 21psi at idel when it starts and only drops to 16psi at wot not sure what it could be no error codes i hope my injection pump is not going when truck starts the smoke i see out the tail pipe is a little blue

If it started after your filter change maybe your oring(s) got nicked. Sounds like air in your system. Park with the front end downhill overnight and see what happens.

i will give it a try the funny thing is this morning it was hard to start but after work today fired right up no problem

If you are still running the stock fuel filter housing I would tighten all the fuel lines and closely inspect the wires going into the top of the filter housing. That is were mine was leaking and was doing the same thing. Did not notice fuel leaking there for a month of hard starting. But was jumping someone off after the truck was warm and popped the hood and there it was. replaced with a housing from an 01 and problem was fixed. Installed an airdog a few weeks later

hard starting
 

My 01 has had this problem since I bought it. It's very intermittent. It did this with the stock fuel system and with my airdog, 3 different sets of injectors as time passed, have since replaced a smoked injection pump, still does it. Some people say that the source of the problem is actually the sending unit assembly that leaks air. I ordered in a Vulcan draw straw and will be putting it in tomorrow.

just let you know when i parked it with the nose down hill it does start up just fine but still cant find a leak maybe i should change the fuel filter and see if that helps

What do you have done to the truck?

i have the edge with attitude,ats aurora 3000 turbo,ats air intake,banks 4 inch monster exhaust system,100hp injectors,fass ddrp lift pump,bd exhaust brake,snow performance stage 2 water/methonal injection, so far thats what i installed in my truck

How long have you had your injectors? Check your oil to see if you have any fuel in there. You could be pulling in air or pushing out fuel as well. Possibly your crossover tubes letting some fuel past maybe.

the injectors are about 4 years old i have only had the truck just over a year and i did check my oil this morning still clean and dont smell like diesel oil was changed 2 months