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01-07-2018, 02:10 PM
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#1
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Member
Join Date: Nov 2017
Posts: 90
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Starting a Cold-Soaked Cummings ISL 400
Here in Orange VA the nighttime temperatures have been close to zero F for over a week, last night it reached -4Ft. I will need to fill up the fuel tank this week. My question is this, how long should I let the Aqua Hot warm the engine before starting it?
I look forward to some sage advice from the forum members.
__________________
Guardsman
2005 Country Coach Allure 470
2001 BMW 330 CI
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01-07-2018, 02:15 PM
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#2
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,751
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AH burning diesel, or electric element?
Burning diesel I'd say about 3 hours. Electric, much longer.
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Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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01-07-2018, 02:17 PM
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#3
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Senior Member
Monaco Owners Club
Join Date: May 2012
Location: DFW, Tex-US
Posts: 6,196
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do you not have a "Wait to start" dash light to tell you when it's ok to start the engine ? just turn the key and watch the dash light works for us !
I've started ours in the tens without any assistance from the engine heater or aqua hot... the glow plugs WILL do it for you, but obviously if you preheat by plugging in the engine block heater or running the aqua hot, it will start OUT warmer
good luck...
and, oh yeah, when you start it, just drive off easy and that's the best way to warm everything up - less idling - better for your rv and your neighbors
__________________
'11 Monaco Diplomat 43DFT RR10R pushed by a '14 Jeep Wrangler JKU. History.. 5'ers: 13 Redwood 38gk(junk!), 11 MVP Destiny, Open Range TT, Winn LeSharo, C's, popups, vans, tents...
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01-07-2018, 02:22 PM
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#4
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Member
Join Date: Nov 2017
Posts: 90
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Starting a Cold-Soaked Cummings ISL 400
Quote:
Originally Posted by 96 Wideglide
AH burning diesel, or electric element?
Burning diesel I'd say about 3 hours. Electric, much longer.
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Yes burning diesel.
__________________
Guardsman
2005 Country Coach Allure 470
2001 BMW 330 CI
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01-07-2018, 02:26 PM
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#5
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Senior Member
Foretravel Owners Club
Join Date: Apr 2016
Location: Home is Where WE PARK IT...
Posts: 6,059
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Quote:
Originally Posted by Guardsman
Yes burning diesel.
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3 or 4 hours even longer won't hurt.
__________________
Retired truckdriver,
'02 Foretravel... "This Shack will do"
being pushed by an '06 Scion xB
SKP's of Box Elder, South Dakota
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01-07-2018, 02:27 PM
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#6
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Member
Join Date: Nov 2017
Posts: 90
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Starting a Cold-Soaked Cummings ISL 400
Quote:
Originally Posted by JohnBoyToo
do you not have a "Wait to start" dash light to tell you when it's ok to start the engine ? just turn the key and watch the dash light works for us !
I've started ours in the tens without any assistance from the engine heater or aqua hot... the glow plugs WILL do it for you, but obviously if you preheat by plugging in the engine block heater or running the aqua hot, it will start OUT warmer
good luck...
and, oh yeah, when you start it, just drive off easy and that's the best way to warm everything up - less idling - better for your rv and your neighbors
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Yes I do have the wait to start light. My concern was that the oil, which is not synthetic, might be a bit sluggish is getting to the bearing surfaces if the motor's temperature is in the teens.
__________________
Guardsman
2005 Country Coach Allure 470
2001 BMW 330 CI
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01-07-2018, 02:54 PM
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#7
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: Orlando, Florida
Posts: 5,819
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Running Aqua-Hot engine pre-heat mode - just wait for the dash temp gauge to show the engine is at 100 degrees F or higher.
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01-07-2018, 03:23 PM
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#8
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Senior Member
Join Date: Aug 2017
Posts: 698
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I know how to start a cold CUMMINS engine.
I’m not familiar with the CUMMINGS brand.
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01-07-2018, 03:25 PM
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#9
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Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,310
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Quote:
Originally Posted by A Traveler
I know how to start a cold CUMMINS engine.
I’m not familiar with the CUMMINGS brand.
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who cares .........everyone knows what the OP was asking ......
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
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01-07-2018, 03:43 PM
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#10
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Senior Member
Outdoors RV Owners Club
Join Date: Dec 2014
Location: Nowhere, now here. Freedom!
Posts: 4,602
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How about read the manual?
Here's what mine says:
Quote:
Engine Warm-Up
Avoid full throttle operation when the engine is cold.
When starting a cold engine, bring the engine up to
operating speed slowly to allow the oil pressure to
stabilize as the engine warms up.
If temperatures are below 32°F (0°C), operate the engine
at moderate speeds for five minutes before full loads are
applied.
Engine Idling
Avoid prolonged idling, long periods of idling may be
harmful to your engine because combustion chamber
temperatures can drop so low that the fuel may not burn
completely. Incomplete combustion allows carbon and
varnish to form on piston rings, cylinder head valves,
and injector nozzles. Also, the unburned fuel can enter
the crankcase, diluting the oil and causing rapid wear to
the engine.
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ORV 19B Full Timer from '15 to '20, '14 Ram 2500 Diesel and a GSD. Vancouver, WA
de K7NOL 146.52Mhz Safety? (CLICK ME!)
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01-07-2018, 04:32 PM
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#11
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Senior Member
Join Date: Jul 2014
Posts: 35,446
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Back in the 70s, I attended a Cummins 855 service class, taught by a guy who probably knew Clessie Cummins.
He said " If you can get it turning 600 RPMs, it will start in any temp".
I've done a few in frame rebuilds on dozer engines. Trust me, the oil doesn't all drip off the parts while sitting for months.
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01-07-2018, 04:41 PM
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#12
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Senior Member
Monaco Owners Club
Join Date: Jul 2011
Location: B.C.
Posts: 4,638
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I been starting them for 40 years in severe cold. These newer engines with the pre heat will start with out harming anything after the wait to start light goes out.
__________________
Dennis & Marcie & Captain Hook The Jack Russell,aka PUP, 2006 Itasca 29R 2017 Equinox toad. RVM59
We came, we went, nothing broken, nothing bent!
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01-07-2018, 04:45 PM
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#13
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Senior Member
Newmar Owners Club
Join Date: Oct 2009
Posts: 10,310
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Any diesel engine in cold weather will start and sound a whole lot better if the coolant is warm and pre heated before starting..........it is just simply easier on the engine and its component's.
Diesel's are like human's.......they like it warm/hot and do not like cold!
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer, 2003 Harley-Davidson
FLHR Road King Anniversary
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01-07-2018, 04:52 PM
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#14
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,751
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If I'm already residing in my coach, running the AH to keep warm, all it takes is flipping one switch to pre-heat the engine.
I don't see any good reason not to !
__________________
Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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