I have a 2003 f350 super duty with the 6.0 diesel, when the air temp is cold it has extended crank, smokes when it starts and runs rough until it warms up, now that its summer time it starts and runs fine, I'm thinkin a glow plug or module issue, what is the correct way to check the glow plugs and glow plug system, I'm a chevy diesel tech so these fords are foreign to me, any ideas

 

Welcome to FTE. Sounds like a good place to begin would be to the FICM.

That procedure is outlined in this thread from the 6.0 tech folder sticky:

https://www.ford-trucks.com/forums/8...procedure.html

Here's a link to the entire folder: https://www.ford-trucks.com/forums/3...ch-folder.html

 

Also you might want to post your engine related questions in the 6.0L forum as you will tend to get more feedback on issues specific to this engine platform. Link is below:

6.0L Power Stroke Diesel - Ford Truck Enthusiasts Forums