Cummins: Max Idle Time Between Regen or Problems?

AzRamLover · Oct 20, 2017

I don't sit around idling often but every once in a while, I find myself sitting in the truck idling for 1+ hours.

Got me thinking:

1. How long can you idle the 6.7 before you have to regen?

2. At what point will idling a 6.7 cause you problems?

My 5.7 LD truck has 155 idle hours & 1540 driving hours so far (model year 2014, 57k miles).

Would this put me in trouble if I had the 6.7 2500 instead?

SouthTexan · Oct 20, 2017

That idle time is less than 10% of your total hours and is not bad at all. I would be concerned if it were closer to 20-25%. I am not sure how long you can idle before needing to regen since it is based on many different variables. The problem with idling is that you are not getting the exhaust hot enough to burn off the soot properly. If you are going to idle for long periods of time like that, then I would recommend using the high idle feature and bumping up the idle to at least 1,200 rpm.

6.7CumminsDrvr · Oct 20, 2017

Really depends on what kind of driving you do. If you get the chance to get her out on a good run with any kind of frequency it would surely help

AzRamLover · Oct 20, 2017

Makes sense. Thanks you guys!

SouthTexan · Oct 20, 2017

Sorry, i was wrong. Per my Cummins Quickserve, an fast idle engine speed of "1,000 rpm or greater" is recommended if idling for long periods of time.

Cummins: Max Idle Time Between Regen or Problems?

AzRamLover

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SouthTexan

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6.7CumminsDrvr

The Dude abides………

AzRamLover

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SouthTexan

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