Rough idle at first Start of the day
 

Ok, new issue... on my DD (truck in my sig) I'm having an issue with a rough idle on the first start of the day (and then sometimes later depending on how far I drove it and how long it's been sitting). I just did the glowplugs, can't try the block heater right now because it's shorted out and I haven't fixed it because I shouldn't need it here in central Texas. I'm wondering if it might not be the injectors? The truck has 373,000 miles (as far as I know) and I don't know when they were done last. What do y'all think? It runs great once it's warmed up, only has the issue when the engine is cooled down.

http://dieselpro.ca/Poppet%20Valve.pdf


I would check the armature clearance


Last oil change?
What oil do you use?

I just changed the oil less than 100 miles ago, it was doing it before and thought I'd give that a try too, it only had right at 3,000 miles on the oil though. When I did the oil change I put archoil in it too. I used rotella 15-40.