[thomasinnv]

just curious, if a plug or two is bad, will it throw a code? how can each plug be tested to see if they are working or not?

the reason i ask is that the last few mornings has been cold (23 deg this morning) and i had to start the truck about 8 times or so before it would finally stay running. yes, i waited for the "wait to start" light each time. it would start without too much cranking, but it would lope really bad, like a huge cam in a gas engine, and then die after about 5 seconds or so. i was finally able to keep it running by pressing on the go pedal for about 10 seconds untill it smoothed out then it would idle.

i know diesels don't like cold weather, but at 23 deg with all glow plugs in working order it should still start and run ok, don't you think? thats why i'm thinking glow plugs...whadaya think?