So a friend called me to take a look at his truck. He said its not starting good when cold. So after sitting for 2 days and outside temps around 40 I tried to start it. It fired and immediately died. I then cycled the glow plugs again and it fired for a second longer than before and died again. On the third try it fired and stayed running but ran really rough. I tried to give it a little throttle to see if it would smooth out and the peddle was unresponsive (I held it to the floor and nothing happened). After about 3 min the truck kicked into high idle all on its own and it smoothed right out. I checked the ficm voltage before I started it and while cranking and through this entire event and it never dropped below 47.5v. The only thing that I found was a code for egr valve. Could that effect the cold start? This truck is a 07 with 118000 and is bone stock. I believe it has a bad case of stiction but there is something else. What am I missing.
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