Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 10-15-2015, 07:36 PM   #1
Junior Member
 
Join Date: Oct 2015
Posts: 3
Diesel Issue?

I have a 2007 fleetwood with the CAT C9 400hp diesel. I just picked it up from a private owner and I am not sure if i have an issue or not. It has 22,000 miles on it. I start it up and warm it only for a minute or so, it idles great but occasionally when i take off it feels like it is "missing", it was very bad my last time out but other times hardly noticed it. It usually powers through it and after the motor warms up past 150 degrees, it runs very smooth. Is this an injector issue or do most of these larger diesels do this? My last diesel pusher was just a small and older 5.9 cummins but it never did this. I would think an injector issue would happen all the time, even when warm?
__________________

__________________
Coldheader is offline   Reply With Quote
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!

Old 10-15-2015, 07:41 PM   #2
Senior Member
 
Join Date: Jul 2015
Location: Athol, Id
Posts: 125
I don't know about the C-9 but when I had my C-7 it ran like a top. Smooth never a hickup. Same for my now 8.9 cummins.
What you might want to check if the fuel filters and air filter.
If they have not been changed in a long time that's the first thing I'd do.
__________________

__________________
2008 Dutch Star 4035
Retired IBEW Local 595
Dutchstar08 is offline   Reply With Quote
Old 10-15-2015, 07:50 PM   #3
Senior Member
 
sam60's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Sep 2014
Posts: 848
Welcome to iRV2!

I'm not sure that I have an answer but a good start would be to check the clamps in & out of the turbo and intercooler. It would be peace of mind at a minimum.
__________________
RVM 123
sam60 is offline   Reply With Quote
Old 10-15-2015, 07:51 PM   #4
Senior Member
 
Damon Owners Club
Join Date: Jul 2010
Location: Annapolis,MD
Posts: 1,195
You are supposed to let it idle until it warms up completely
before driving it. At least 5 minutes for my ISC, until the
temp gauge moves out of the blue range. Depending on
your gauge, I'd suspect 1/4 to 1/3 of the gauge range,
maybe more in cold weather.
__________________
macandphyl is offline   Reply With Quote
Old 10-15-2015, 09:06 PM   #5
Senior Member
 
slickest1's Avatar
 
Monaco Owners Club
Join Date: Jul 2011
Location: B.C.
Posts: 3,717
Like said above warm it up for five or ten minutes. Use your cruise control to idle it up.
If it still does this I would change fuel filters, and if in fact you don't know when they were changed last I would just change them.
__________________
Dennis & Marcie & Captain Hook The Jack Russell,aka PUP, 04 Dodge/Cummins 01 Citation 29.rk fifth wheel.RVM59
slickest1 is offline   Reply With Quote
Old 10-15-2015, 09:14 PM   #6
Senior Member
 
Outdoors RV Owners Club
Join Date: Dec 2014
Location: Nowhere, now here. Freedom!
Posts: 3,003
You don't have to warm up a modern diesel engine. Many fuel injection systems have a little quirk in them. I have a motorcycle that runs smooth as an electric motor above 1K RPM, but under that and it might stumble a little if you make a little throttle change in a lower gear.

Start it up, confirm oil and air pressure (if air brakes), drive it gently until it warms up or at least the first few minutes, then drive it like you stole it if you want to.
__________________
ORV 19B Full Timer, '14 Ram 2500 Diesel and a GSD. This signature updated, May 1, '17.
Currently funemployed in Vancouver WA de K7NOL 146.52Mhz Safety? (CLICK ME!)
1bigmess is online now   Reply With Quote
Old 10-15-2015, 10:46 PM   #7
Member
 
Mr. Hipster's Avatar
 
Join Date: Jan 2014
Location: Milwaukee area/central Idaho
Posts: 93
Poor advice^^^. A good warm up is cheap insurance, or at least be easy on the throttle until temp is up to normal. Diesels rattle and bang due to serious forces within.
__________________
Mr. Hipster is offline   Reply With Quote
Old 10-15-2015, 10:58 PM   #8
Senior Member
 
Outdoors RV Owners Club
Join Date: Dec 2014
Location: Nowhere, now here. Freedom!
Posts: 3,003
A good long warm up dilutes oil with unburned fuel. Getting that thing up to temp a little quicker by driving it easy for the first few minutes helps get cylinder temps up to good operating range. cylinder temps not in good range and you get unburned fuel, and some of that has to get down to your oil by washing down the cylinder walls.

Hey, it's your engine. I don't pay a thin dime for any of your maintenance and repairs. Do watcha like. Don't trust me, be skeptical, it's healthy. Verify this with the folks that fix the things, go to CE conferences and meetings to learn about the newest engines in their product lines, and are supposed to know more about their product than you should.
__________________
ORV 19B Full Timer, '14 Ram 2500 Diesel and a GSD. This signature updated, May 1, '17.
Currently funemployed in Vancouver WA de K7NOL 146.52Mhz Safety? (CLICK ME!)
1bigmess is online now   Reply With Quote
Old 10-15-2015, 11:09 PM   #9
Senior Member
 
sam60's Avatar
 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Sep 2014
Posts: 848
My old C8.3 runs great after the air bags are full and I hear the relief valve dump. About 2~3 minutes.

My 05 Cummins pickup leaves the driveway after about 10 seconds of warm-up. 302K miles on it now.

The OP needs to look at filters etc. as already mentioned. Eliminate the easy things first. JMHO
__________________
RVM 123
sam60 is offline   Reply With Quote
Old 10-15-2015, 11:18 PM   #10
Senior Member
 
FunGus's Avatar
 
Monaco Owners Club
Join Date: Jun 2015
Posts: 369
If my C9 is not past about the 140-150 range it will also stumble a bit like it's missing. I have since started letting it warm up an extra couple minutes and it doesn't happen.
__________________
Loving the Beaver!
Jason, Sherri, Christian, & Wheeler (Golden Retriever)
2008 Beaver Contessa Huntington CAT C9 400hp FMCA F25478 S4
FunGus is offline   Reply With Quote
Old 10-16-2015, 12:23 AM   #11
Senior Member
 
FIRE UP's Avatar


 
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 5,279
Well,
Here we go again with the "Warm up" thing. Diesel engines are still DIESEL ENGINES! But, the operational characteristics, the smog compliance requirements, soot output, and more, have all changed drastically in the last few years. And, If you read authoritive excerpts from competent tech mags and articles on diesel engines of today, you'll see that there's no need to warm them up. The old, OLD school of warming up over the road rigs has been gone for decades. Although most of those boys still do it some. There's just no need or, requirement in todays technical diesels.

It always cracks me up when some YAHOO pulls in to get fuel for his 8' OFF THE GROUND DIESEL FORD pickup and, leaves it running. Airhead!

In thirty years of driving fire trucks, and all the changes that were in those engines etc. over that time, we NEVER had any engines go south due to lack of warm up for FULL THROTTLE operations to get to an emergency.

Yes, there were some issues every once in a while with injectors leaking, turbos gone south, CACs with major leaks (mostly because of severe tweaking of frames etc. for rough driving characteristics and, LOUSY SAN DIEGO ROADS, etc.

But, warming up most of todays diesel coaches is not needed and, a waste of fuel and also, AN ANNOYANCE! In our coach, an '04 Itasca Horizon 36GD with the C-7 330HP, I fire it up, make sure all systems are a "Go" for Houston and, we're off. That engine has 62K on the clock and runs like a noisy sewing machine.

As for the OPs issue, he stated it's worse at times, not so bad at others. Pretty sure warming that engine up has no effect on what his issue is. I hate intermittent problems. If somethings going to break, THEN BREAK! That way I can fix it. But, maybe if I were the OP, I'd take a good look at the fuel filter(s) as a simple, fast and for the most part, CHEAP attempt at remedying this issue.

If that don't do it, then you go into it deeper.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '08 GL 1800 Gold Wing
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Sophie character, (mini Schnauzer)
FIRE UP is offline   Reply With Quote
Old 10-16-2015, 08:39 AM   #12
Senior Member
 
Gormleys's Avatar
 
Winnebago Owners Club
Freightliner Owners Club
Join Date: Sep 2012
Location: CO
Posts: 674
First off, Coldheader, welcome to the Forum!

Your first question sure hit a home run. Hopefully, you learned a couple of things without being turned off by the spirited dialogue.

Keep asking 'em!
__________________
Colorado '15 Winnebago Forza 34T w/MKZ hybrid toad
Gormleys is offline   Reply With Quote
Old 10-16-2015, 08:56 AM   #13
Senior Member
 
Damon Owners Club
Join Date: Jul 2010
Location: Annapolis,MD
Posts: 1,195
A fire truck parked indoors in a climate controlled environment
is San Diego, Ca is not representative of motor home usage.
Cummins clearly states that a warm up is required for my ISC,
and that is what I do. It only takes a few minutes for a cold engine
to come up to operational temperatures.
__________________
macandphyl is offline   Reply With Quote
Old 10-16-2015, 10:09 AM   #14
Member
 
Mr. Hipster's Avatar
 
Join Date: Jan 2014
Location: Milwaukee area/central Idaho
Posts: 93
Anti warm up guys, panties in a bunch today? Easy operation after air builds up is normally adequate. Keep the throttle mashing under control until thermostat opens, that's all.
Regarding the 'new tech' engines with urine in a tank and regen cycles and such, I'll stay with my vintage/repairable/affordable fleet, and plug them in @ night.
__________________

__________________
Mr. Hipster is offline   Reply With Quote
Reply

Tags
diesel



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
To diesel or not to diesel? FixerCQI Canada Region 29 11-23-2014 12:59 PM
B20 Bio Diesel traveler of california iRV2.com General Discussion 31 06-02-2014 12:19 PM
Gas and Diesel annual maintenance $ Differences? 2wiresdave Class A Motorhome Discussions 17 05-16-2014 06:20 PM
Diesel Fuel - Truck vs Reg Diesel sstehman Class A Motorhome Discussions 10 04-30-2014 12:22 PM
Hydronic heat: Propane vs Diesel in winter temps? TinMan Trvlr RV Systems & Appliances 10 03-31-2014 03:32 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:16 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.