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Old 02-06-2015, 09:11 PM   #99
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Idling while refueling diesel pushers

Not to beat a dead (pale) horse but the point here OBVIOUSLY is the difference between Modern DEF fuel efficient, clean burning Diesel engines and old diesel non-DEF engines.

As has been mentioned in this thread time and time again, if you idle a DEF engine too long you're going to get carbon buildup, check engine light, then if you don't do a regen to burn the carbon out you will go into limp mode.

Please refer to the Cummins reference mentioned above to see that long idles are NOT recommended. Only 3-5 minutes for turbo cool down, longer if excessive high input.

If you have an old non-DEF engine and you choose to let it run whilst refueling, against what the placards state at the fuel pumps then that is your choice and your responsibility, no harm in letting a non-DEF engine idle, just violating the rules stated that tell you to shut down your motor when refueling. If there's an accident, it's on you.

Got it?

Cheers!
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Old 02-06-2015, 09:18 PM   #100
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"alpha99" is the thread killer here. He gave the most accurate and sensible statement, no need to discuss any further!
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Old 02-06-2015, 09:22 PM   #101
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Quote:
Originally Posted by alpha99 View Post
Not to beat a dead (pale) horse but the point here OBVIOUSLY is the difference between Modern DEF fuel efficient, clean burning Diesel engines and old diesel non-DEF engines.

As has been mentioned in this thread time and time again, if you idle a DEF engine too long you're going to get carbon buildup, check engine light, then if you don't do a regen to burn the carbon out you will go into limp mode.

Please refer to the Cummins reference mentioned above to see that long idles are NOT recommended. Only 3-5 minutes for turbo cool down, longer if excessive high input.

If you have an old non-DEF engine, let it run.

Got it?

Cheers!
Still missing it!!!! My LORD!!!! in 100 posts "IDLE"! New or old!
DON'T TTTTT" IDLE"............. Old diesel engine's "Carbon" also......Idling.....
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Old 02-07-2015, 10:20 AM   #102
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One thing I can tell you for sure,.......without doubt Steve.......Your diesel engine "Hates" you Sorry........
Start, stop, start , stop/////////// Traffic moves.........
Sorry for putting a new twist on this thread.........maybe I am a "Thread Killer" ?.........For some reason, this thread ....has slowed down? Mostly from the "Shutdown" FOLKS.........As always........"to each their own".
Sure would of thought....... We would of heard a lot more though........with the twist...........?
OK..... maybe a "Bible" re-think........do to "Science"?
I worked for an agency that had 825 diesel trucks (pre DEF) in the fleet. The fleet managers mandated that the engines not be idled for more than 5 minutes. Their rationale was it was more costly to them in parts and repair.

We paid for the fuel as users so it was cheaper for us as well.

It seemed to us that the trucks had less down time.

This was based on fleet averages. I suspect that indiviual vehicles will be different.
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Old 02-07-2015, 07:36 PM   #103
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"alpha99" is the thread killer here. He gave the most accurate and sensible statement, no need to discuss any further!
+ infinity!!! Let me see... my MH goes to Cummins for service and they pull the ECM codes and see excessive idling. WAIT Cummins, I read it on the internet, so it must be true .

- OR -

my MH goes to Cummins for service and they see no signs of abuse because I followed THEIR manual. Warranty redeemed for any need non-maintenance repairs, case closed.

It's almost as if there is some trolling going on.
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Old 02-07-2015, 07:59 PM   #104
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RTFM...

Above post is close.

One should read the engine operators manual and see what it states and or contact the manufacturer to verify how one should operate the engine under the conditions that you expect to be.

Does not matter what your buddy or the epa states...it only matters how the engine is designed to operate.
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Old 02-07-2015, 08:35 PM   #105
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+ infinity!!! Let me see... my MH goes to Cummins for service and they pull the ECM codes and see excessive idling. WAIT Cummins, I read it on the internet, so it must be true .

- OR -

my MH goes to Cummins for service and they see no signs of abuse because I followed THEIR manual. Warranty redeemed for any need non-maintenance repairs, case closed.

It's almost as if there is some trolling going on.

Just curious, what does your cummins manual say to do? Mine says ... "Allow the engine to idle for 3 to 5 minutes after a full load operation. This allows the engine to cool gradually and uniformly."

And then after that, what does your rv's owners manual state? Mine (Monaco) says to "Allow the engine to run at idle for a FULL FIVE MINUTES before turning it off." The italics is the manual's, not mine. The manual doesn't specify full load, sort of loading, or even minimal loading.
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Old 02-08-2015, 06:10 AM   #106
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Just thinking out loud here….If I was to pick where my engine quit running, would it be at the fuel island or the campground?
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Old 02-08-2015, 07:31 AM   #107
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Just thinking out loud here….If I was to pick where my engine quit running, would it be at the fuel island or the campground?
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Old 02-08-2015, 09:34 AM   #108
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It's illegal in WA state. There are decals on every pump saying "Engines must be shut off during refueling".
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Old 02-08-2015, 02:46 PM   #109
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IMHO!

I find this discussion rather amusing. It is quite evident that every engine series is spec'd differently and can call for different maintenance and operation requirements. So what is everyone ranting back and forth about, refer to your owners manual.

It is very apparent based upon reading many posts on this forum that most RV owners have little experience with heavy equipment, diesel engines and display little to no mechanical knowhow.

We are talking diesel engines here, and namely when to shut them off or restart. Fact is this...turbos like oil and if there is no supply of oil they will inherently let you know someday. That requires a run above idle supplying oil pressure to circulate, cool and keep those bits lubricated, simple really. Now keeping that said cummins running for extended periods at idle will eventually create some not so nice build up. High idle will remedy that so, its a matter of burn fuel or not. If you are economy conscious and driven by that, well then shut her down. If you are like me and "care deeply" then let it run. You will have less wear and tear leaving your engine running with warm oil circulating than you will having to restart, putting stress on components to start and lack of initial oil pressure. These engines are better suited for constant service, not on demand start and stop. We aren't talking about your generator here (that is another topic!).
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Old 02-08-2015, 11:33 PM   #110
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How much wear and tear can you be talking about? These engines are designed to last and typically will outlive the rest of the motorhome. Shutting it down and restarting a few more times in its lifetime isnt going to make any difference. I shut mine down and will continue to do so. The engine will last forever if you dont use it....just sayin...



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Old 02-10-2015, 07:35 PM   #111
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Just spoke with a fellow who owned a Peterbuilt dealership.

Said he had a tour of the Cummins plant in Columbus.

Said they had a section whose job was to routinely pull an engine from the line and test it to failure using all kinds of extreme measures. Hot temps then immediately cold. Starting cold with heavy oil, different oil grades, etc, etc.

If Cummins says to cool it off then shut down that is what I will be doing.
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Old 02-11-2015, 02:04 PM   #112
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If you're in Washington State, it's illegal under state law not to shut down.
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