Well this morning my truck had a hard time starting because it cranked over awhile then it started. After reading this forum I guessed it was bad fuel since I filled up at a place cause the diesel was like 20 cents cheaper so I added some PSD to it and it seems to start better but I just noticed this evening, the truck in park it idles kinda rough but it gear it idles good. Does anyone have an idea what the problem could be?

 

I would check your lift pump and make sure it is pushing enough fuel.

 

well my lift pump is maybe 4 months old, it only runs for a second but if I bump it, it will run its normal time, the lift pump running issues started after I ran my friends Smarty for a night.

 

soniclm:same as me,when i turn key on pressure goes about 5psi than goes down,when i bump engine fuel pressure came one...

 

I hooked a fuel pressure gauge up to my truck and I turn the key and I don't think it registered anything but when I bump it, it goes to 18 and idling is stays at 15.