I brushed the snow off and started my truck this morning and it made a missing almost nocking sound. Is this the romps? It never died and cleared out in a few seconds.

Matbe it is just loping?

 

Cold morning start. what is the temp? if you are not used to it you will think that something is totally wrong, was it plugged in?
I have started mine plugged in at -35c and it sounds like it is running on One cylinder till it clears out then it runs fine diesels do not start good cold

 

It's called a fuel knock & It's because the one missing cylinder is starting to load up on unburned fuel till it gets warm enough to fire normaly. probably a dead glow plug.

 

yes it prob is a glow plug ,but if it is cold enough it won't matter if the glow plugs are working or not it will still do it

 

It was plugged in for about 30 min.

 

30 min. isn't much time to have affect. will help, but if it's really cold it wont eliminate rough cold running.

 

Sounds normal to me but like they said might check glow plugs and leave it plug in overnight so the heater can work faster.

 

Block heater needs 3 hours to be affective (per manual). I have brand new GPs and a Stancor GPR (way better than stock) New batteries, batt cables and starter. If it 10* or colder and I don't plug it in, mine will still have a fuel knock. I know all the GPs are good, just cold enough that it does it. If i have it plugged in on my outdoor timer, for 3 hours no Knock. But yes that is normal for really cold. May have a dead GP or 2 also if haven't been changed in a while.

-Robb