|
|
01-16-2014, 06:41 PM
|
#1
|
Senior Member
Fleetwood Owners Club Outdoors RV Owners Club
Join Date: Nov 2013
Location: Houston, Texas
Posts: 4,580
|
Why am I waiting to start?
So I'm a DD (diesel dummy )
I know it's an engine, I know it makes power, I know what kind of gas it uses, but what I don't know is....
... what's actually happening when the "wait to start" light is lit. What is my engine doing during that time?
And why sometimes does the light go out, I try to crank, and it comes back on.
__________________
RVM#78 - -USAF- F-15 Eagle Radar Vet
'5 Fleetwood Revolution- '15 Airstream Intl Sig. 27FB
Jay, Andrea, Stella '14 Ram 3500 Aisin '18 ORV F30RLS
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
01-16-2014, 06:42 PM
|
#2
|
Community Administrator
Join Date: Aug 2009
Posts: 53,378
|
What engine do you have ?
__________________
Cliff,Tallulah and Buddy ( 1999-2012 )
|
|
|
01-16-2014, 06:44 PM
|
#3
|
Member
Thor Owners Club
Join Date: Nov 2012
Posts: 54
|
Waiting for your glow plugs to warm the cylinders.
__________________
Bob & Kimi, Fuzzy Butted Daughter Penny
2012 Crossroads Cruiser CF27RLX
2000 Ram 2500
|
|
|
01-16-2014, 06:46 PM
|
#4
|
Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
|
Glow plugs heating during the delay. If not hot mixture will not ignite and engine will not run.
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
|
|
|
01-16-2014, 06:52 PM
|
#5
|
Senior Member
Join Date: Dec 2012
Posts: 378
|
it does not use 'gas' , we diesel guys say - fuel- big difference
__________________
2005 volvo 670 12 speed auto shift
singled, hensley trailer saver smart car "on deck"
Newmar 34 rsks Torrey Pine
|
|
|
01-16-2014, 06:54 PM
|
#6
|
Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
|
Quote:
Originally Posted by bdwillie
Waiting for your glow plugs to warm the cylinders.
|
Most RV's today (the OP's included) do not have glow plugs, they have a grid heater in the intake. That's why you NEVER use starting fluid with them. The resulting explosion won't be pretty or cheap to fix.
OTH our generator does have glow plugs as it's a 3 cyl Kubota engine.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
|
|
|
01-16-2014, 07:16 PM
|
#7
|
Senior Member
Join Date: Mar 2012
Location: Palmer Ak
Posts: 1,136
|
During the 'wait to start' light is on, the grid heater is pre-warming the air for the engine to start. Even after the engine has started, the grid heater may still cycle, if the outside air temps are cold. During this time, just take a few minutes and check everything else out. Not only will it be easier to start the engine, but it will be less strain on the starter.
__________________
2009 38' Diplomat
CSM- retired, wife as co-pilot
Reka & Ali providing security (our 2 labs)
|
|
|
01-16-2014, 08:10 PM
|
#8
|
Senior Member
Fleetwood Owners Club Outdoors RV Owners Club
Join Date: Nov 2013
Location: Houston, Texas
Posts: 4,580
|
Ok cool, I'm running a Cat 9, and I was so curious as to what it was heating. I figured it was warming up something, just wasn't sure, and I'm a notorious researcher and "want to know everything'er"
__________________
RVM#78 - -USAF- F-15 Eagle Radar Vet
'5 Fleetwood Revolution- '15 Airstream Intl Sig. 27FB
Jay, Andrea, Stella '14 Ram 3500 Aisin '18 ORV F30RLS
|
|
|
01-17-2014, 12:35 AM
|
#9
|
Senior Member
Join Date: Sep 2013
Location: Leland, NC
Posts: 166
|
Just a little fyi on gas and diesel:
Gasoline is more of a solvent and has a burn rate that is compared to octane. Diesel is more of a lubricant, (at least before uls), and has a burn rate compared to cetane. Diesel also has more BTU's of energy per gallon than gasoline.
Diesel engines don't use spark plugs to initiate combustion, they use the heat of compression. There is a formula to figure heat generated based on changing volumes and rate of change. If the air in the cylinder is very cool, the compression of the air in the cylinder may not rise high enough to initiate combustion. You can't change the compression rate or the volume being compressed. Therefore, heat the air before it enters the cylinder.
__________________
2018 GMC Sierra 3500 Denali Dually
2021 Coachman Freedom Express 321FEDSLE Liberty Edition
|
|
|
01-17-2014, 06:01 AM
|
#10
|
Senior Member
Join Date: Nov 2010
Posts: 475
|
You should have an engine block heater that should be used when 40 degrees or colder. When plugged in a few hours prior to starting, it will preheat your engine so it's easier to start. Also, it will be warm enough so the "wait to start" light will not even come on.
__________________
2008 AC Allegiance 42G, Spartan, ISL
|
|
|
01-17-2014, 06:13 AM
|
#11
|
Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Mar 2007
Location: Home on the hill in Georgia
Posts: 2,742
|
Also on mine its running the fuel pump to build up pressure. If I listen close I can hear it cycling.
__________________
Jerry Potter, Taz
1999 Coachman Catalina Sport
[SIGPIC][/SIGPIC]
|
|
|
01-17-2014, 06:57 AM
|
#12
|
Senior Member
Monaco Owners Club Texas Boomers Club
Join Date: Jan 2009
Posts: 2,529
|
Quote:
Originally Posted by plasma800
So I'm a DD (diesel dummy )
I know it's an engine, I know it makes power, I know what kind of gas it uses, but what I don't know is....
|
Actually you know what kind of FUEL it uses. Doubt it's gas (gasoline) but more likely diesel (fuel)
__________________
Hal & Ginny Miller '04 Beaver Santiam PRT40
'04 Saturn Vue - US Gear Brake - Blue Ox tow
3"girls" (2 Irish Setters - 1 Retriever) - RIP Annie & Emily (12/26/2017)
|
|
|
01-17-2014, 08:47 AM
|
#13
|
Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,578
|
Quote:
Originally Posted by plasma800
Ok cool, I'm running a Cat 9, and I was so curious as to what it was heating. I figured it was warming up something, just wasn't sure, and I'm a notorious researcher and "want to know everything'er"
|
That's a GOOD thing!
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
|
|
|
01-18-2014, 05:22 AM
|
#14
|
Senior Member
Join Date: Dec 2012
Posts: 378
|
Quote:
Originally Posted by plasma800
Ok cool, I'm running a Cat 9, and I was so curious as to what it was heating. I figured it was warming up something, just wasn't sure, and I'm a notorious researcher and "want to know everything'er"
|
Its heating air in the intake 'pumbing/duct' just like a toaster the wires glow cherry red,if you have a battery gauge you can watch it show the load coming and going as it cycles off and on.This continues even after it starts if its cold enough, or you may notice engine revs change a bit as the alternator demands more 'juice' each time it comes on,I don't like to use other accessories until this is over (2-3 minutes?)
All the CAT engines I have started in the cold are notorious for long crank times,but they start - eventually
__________________
2005 volvo 670 12 speed auto shift
singled, hensley trailer saver smart car "on deck"
Newmar 34 rsks Torrey Pine
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|