hey guys i just got my truck not too long ago so i am new to the diesel engines (been around mustangs most all of my life, and a couple jeeps haha). i live in north carolina and lately its been getting chilly at night and the early mornin. ive noticed its harder to start when it gets below 40. these past mornings, around 730am because i warm it up before going to school, it has been around 30 outside and it barley wanted to start. a good amount of white smoke would come out when i would crank it, and more when it cranked, but stopped after a minute or so. i decided i would plug it in tonight to see what it does so we will see. ive heard from some to let the glow plugs cycle before starting, so that means to turn the switch on and off for the wait to start light to cycle? but ive also heard thats not good for the GPR. there was also a loud kinda hisssing sound from the exhaust yesterday morning, which was the coldest morning so far, so idk what the hissing is. If anyone can help me out that would be great cause im new to the 7.3, but i love it so far.