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Golferdave78 · 09-05-2016, 08:51 PM

I have a 2015 Dutch Star Diesel Pusher with the 450 engine.
I remember hearing old school to just idle a Diesel engine when fueling, stopping at rest area, anytime you are stopped for a short period of time.
Now with environmental stuff on the engines when should I idle and when should I just shut down
Thanks

kustom · 09-05-2016, 09:05 PM

would like to known also

Skip426 · 09-05-2016, 09:10 PM

Best info would be in your Cummins owners manual.

JMHO; In a rest area , I'll only shut down after a suitable cool down ( depending on speed and terrain) if stopping for a lunch break 15+ minutes .
Fuel stops, I'll use the truck lanes and don't i pull to the pumps until the coach has idled down to cool the turbo; again time length depends on speed ; and I shut down to fuel.
Cool down of the turbo , if the coach has been driven at city speeds , for 10 minutes , I consider that enough cool down time. Pulling directly off the highway, three minutes at idle.

EDIT: If idling longer than 2 minutes, from cold start , I pick the RPM up to 800.

Ray,IN · 09-05-2016, 09:35 PM

Diesel Idling facts and myths pdf
Newer Cummins engines have an automatic engine shutdown feature.
Newer Cummins engines meet the CA CARB requirements for idling (5 min), all 2007 and later engines can be updated to meet CA CARB requirements for extended idling.

w6pea · 09-06-2016, 01:07 AM

Quote:

Originally Posted by Ray,IN

Diesel Idling facts and myths pdf
Newer Cummins engines have an automatic engine shutdown feature.
Newer Cummins engines meet the CA CARB requirements for idling (5 min), all 2007 and later engines can be updated to meet CA CARB requirements for extended idling.

I agree with what Ray said, I have a set procedure I follow

In my Ram Truck I have the 6.7L IL-6 Cummins Turbo Diesel. If I have been driving on the freeway or on city streets. I idle down for 5min. If there was a pyrometer gauge I would wait until it was less than 900 degree. I always have let the engine idle cool down for 5 minutes after I have parked the rig.

Selah · 09-06-2016, 06:16 AM

If my feeble old mind remembers correctly:
Newer engines equipped with DPF, with or with out DEF, should,not be idled for more then 10 minutes at a time. Extended ideling tends to clog the filter at a faster rate than normal driving.
I never idle when fueling nor do I idle when setting up or tearing down at a camp site. Once the coach is aired up I'm ready to go. In every campground I have been to by the time I get an interstate or highway the engine is sufficiently warmed up to travel at highway speeds.