Originally Posted by RANGERBOB
A diesel that disturbs my sleep in the morning hours is another excuse for that mid afternoon nap!
Close the thread, we have a winner!!!!
Originally Posted by dj3spots
I have to ask. We get everything ready the night before we leave. Then we only have to run in the slides, put up the the jacks and stow the hoses. If we're leaving real early we try to be quiet. We have a diesel truck and only start it up when we're ready to leave. Why do some people start their engines let them Run ... Run.... Run.? What purpose does it serve?
There's several reasons. Mainly, it used to be you could damage a diesel if you loaded it while it was cold. Diesels don't use spark plugs, they use latent heat in the cylinder under extreme pressure to cause the fuel to combust.
When they were cold, if you put too hard a load on them, the fuel either wouldn't burn due to the amount being sprayed in which loaded the exhaust with fuel and soaked the cylinder, causing hot spots and detonation when it did finally combust, or it would burn late and very suddenly, causing detonation. That would tear a diesel piston to pieces.
The reality? You can drive away unloaded as soon as you put it in gear, if you're going to be loaded, five minutes in the summer, ten in the winter, of idle time is plenty to get the cylinders warm. You're going to crawl in first gear out of the campground, by the time you reach the exit it's more than warm enough to drive normally.
The reality of those that don't understand diesels and the mechanics that service them? Most folks are told to let it fully warm up where the temperature gauge is at it's normal point.
On a diesel that takes forever, easily 30 minutes on a cold day.
That's typical. There's other scenarios also, fire it, let it get warm while hitching up, then talk to the neighbor, or there's something that needs tending to inside, or the breakfast suggestions start. It's not hard for 20 minutes to disappear once distracted. Next thing you know, it's been 30 minutes and the neighbor is glaring through their blinds.
That's my take.