Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 07-05-2022, 08:17 PM   #1
Junior Member
Join Date: Sep 2014
Posts: 2
starting engine after 32 months

Hi there, I have a 2017 American Coach with a 8.9 Cummins stored in Southern California since November 2019.
I live overseas and haven't been able to return to the USA due to Covid so the engine hasn't been started during that time.
Before storing, the fuel tank was filled and a diesel bug treatment was included with the fuel. All batteries were physically disconnected at the batteries.

My query: Is there any precautions to take before attempting to start the engine? And should it start ok?

spencers is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! 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 07-05-2022, 08:26 PM   #2
Senior Member
Skip426's Avatar

Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 26,963
Fully charge the batteries then load test them ; check all fluid levels , check air filter and exhaust for nests of bugs , birds or rodents .
Cycle the key on and wait 30 seconds , turn key off and repeat , several times to prime the fuel system by giving the lift pump time to prime the fuel injector pump .
Attempt to start .
If you didn't change the oil prior to storage , run engine to full operating temp and then change the oil & filter.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 07-05-2022, 08:38 PM   #3
Senior Member
lllkrob's Avatar
Join Date: Nov 2008
Posts: 3,345
The only problem you might encounter is dead batteries from sitting that long uncharged. Other than that, being diesel, it should start up with out too much cranking. Before starting make sure the batteries are charged, and when first turning on the key wait 30 seconds for the electric fuel pump in the tank to charge the fuel lines. Once started, let it idle til full oil pressure is shown on the gauge. Also the tires will need airing up from sitting so long, and they will have flat spots and will ride rough for the first hundred miles till they get fully warmed up and start to round out. As long as the fuel was treated with a biocide when stored, it should not have any microbe growth to worry about. If not, then buy extra fuel filters to take with you on your first trip and add a biocide at 3X the normal strength to kill off any microbes.
2013 Tiffin Phaeton 40QBH
2016 Chevrolet Equinox LTZ AWD V6
lllkrob is offline   Reply With Quote
Old 07-06-2022, 06:20 AM   #4
Senior Member
jacwjames's Avatar
Monaco Owners Club
Join Date: Jun 2014
Posts: 11,673
Extra fuel filters would be wise.
I'd also cycle the key several times to make sure the system is primed.
Try starting the rig and just watch the gauges to makes sure everything looks good, especially the oil pressure.

You might consider sending in an oil sample for analysis and change the oil based on this.

I don't think you will have a problem.
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
jacwjames is offline   Reply With Quote
Old 07-06-2022, 01:20 PM   #5
Senior Member
Ray,IN's Avatar
Join Date: Aug 2001
Location: North America somewhere
Posts: 26,078
That year Cummins has a built-in oil pressure/starter function. The engine will rotate but not start until the ECM "sees" engine oil pressure; that means nothing special to do before starting the engine except insuring oil level is OK.
Drive slower the first 20 miles or so to allow wheel bearing, diff., and other oil/grease lubricated parts to be fully coated before any high speed driving.

Drain the water separator after 15-30 minutes of the engine running, JIC there is water in the fuel tank. Buying and carrying spare fuel filters is a great suggestion IMO.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
Ray,IN is offline   Reply With Quote
Old 07-06-2022, 04:56 PM   #6
Senior Member
Join Date: Apr 2018
Posts: 1,991
Not so sure any treatment lasts 3 years. You could have a fuel polisher come out and clean the fuel in the tank first.
shootist is offline   Reply With Quote
Old 07-06-2022, 08:09 PM   #7
Senior Member
lllkrob's Avatar
Join Date: Nov 2008
Posts: 3,345
Originally Posted by shootist View Post
Not so sure any treatment lasts 3 years. You could have a fuel polisher come out and clean the fuel in the tank first.

Diesel fuel used in military vehicles is treated with a BioBor JF equivalent when sold to the government. This fuel routinely sits in storage tanks for years before being used with no problems. Like the diesel fuel, it doesn't break down with age.
2013 Tiffin Phaeton 40QBH
2016 Chevrolet Equinox LTZ AWD V6
lllkrob is offline   Reply With Quote
Old 07-07-2022, 01:31 AM   #8
Senior Member
Gulf Streamers Club
Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 3,379
If no water in diesel fuel, I would expect no problems?
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
THenne1713 is offline   Reply With Quote


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
Starting DP after 3 months non use NewmarKate Newmar Owner's Forum 22 03-16-2022 11:58 AM
Rusty fluid spray after 'aired-up' after starting Contender Spartan Motorhome Chassis Forum 7 03-23-2019 06:46 AM
Winter Months: Better to drive or let sit 3-4 months JoJoKnight Jayco Owner's Forum 1 11-25-2018 08:39 PM
"Wait to Start" light on Cummins C8.3 blinking after starting engine maw85331 Monaco Owner's Forum 7 07-21-2018 06:22 PM
Fitness: 3 months in an RV vs. 3 months in a space ship NealC General Discussion 24 04-11-2018 08:05 AM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 06:55 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.