A few days ago it got down to - 8 degrees here in the mountains of NM when I went to start my Ford F-350 6.7 diesel I hit the glow plugs just until the light went out , about 5 seconds and the truck s...
I once had the glow plug relay go bad on an 80’s Ford 6.9, midnight leaving work, 0 degrees. I got it started, but took a while, and man did that thing smoke!