RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Alpine Coach Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-17-2020, 07:34 AM   #1
Member
 
Yankeebelle's Avatar
 
Alpine Owners Club
Join Date: Aug 2017
Location: Daphne, AL
Posts: 90
Cummins ISC Fuel Problem

Hi all

Just had the fuel lift pump replaced on our coach which has the Cummins ISC 350 HP on it. When got it back from the shop drove it about 5 miles down the road and all good when it sputtered and died. After sitting on the side of the road looked and no fuel in the filter. Went through turning the key on and off to prime and a bit later fired back up. Drove down the road cautiously a few miles and pulled into the Pilot to add some fuel.

Went back on a backroad and ran it up to normal cruising speeds for about 10 miles and dawned on me probably had some air in it where they had the lines off, and maybe it finally purged out. Ran fine after that. Had it out a few times over the last two weeks running it and was great. Was out with it Monday and ran down the road about 2 hrs and start/stopped a few times. No problem. Yesterday cranked up fine - idled for 5 mins or so, went 100 yards and died. Went and bled the fuel filter and not much fuel in it. Muttered a few choice words. Could hear the pump cycling. Gave it a while and figured try to prime the filter again, and after a bit fired back up. Just parked back in the yard. Trying to figure out what could be causing that. Ran perfect for a couple weeks. No apparent leaks that can be seen.

Any thoughts would be appreciated.

Thanks
Bruce
__________________

__________________
Bruce and Paula Byrd - Daphne, AL
2001 Alpine 38 FDDS 74378
2018 Jeep Wrangler JL Moab Edition
Yankeebelle 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 04-17-2020, 07:43 AM   #2
Senior Member
 
paul65k's Avatar


 
Alpine Owners Club
Join Date: Nov 2015
Location: Lake Havasu City, AZ
Posts: 726
Wow........sorry I don't have an easy fix but I would look at the fuel lines between tank and filter and to the lift pump. On the surface, it sounds like it may be a fuel line, either fitting at tank, filter assembly or the line itself based on the way I understand your explanation.

I think if it was a lift pump or even an engine fuel pump the filter would be full and not empty when the problem crops up.

If there is any way to test the fuel line from the tank, if it was me, I would start there
__________________

__________________
Paul & Jean
2001 Alpine 36FDDS - 1600W Solar, 10,752 Wh (840Ah) LifePO4
2014 Jeep Wrangler Unlimited Rubicon
2006 Alpenlite 32RL - Sold
paul65k is offline   Reply With Quote
Old 04-17-2020, 08:30 AM   #3
Member
 
Alpine Owners Club
Join Date: Nov 2017
Location: Dayton Nv.
Posts: 37
Where I use to work we had a saying " for every action there is a reaction". They replaced the lift pump look at the fitting for the lift pump, my 04 has oring fitting connecting to the pump I would think that one of the orings has a cut or the flare connection is not tight. I am going to bypass the lift pump and install a Fass pump and filter system on engine in the next couple weeks. I believe this is a better system than the original lift pump.
__________________
Mountain Mike
Dayton Nv.
2004 36ft MDDS
MountainMike is offline   Reply With Quote
Old 04-17-2020, 10:36 AM   #4
Senior Member


 
Join Date: Oct 2019
Location: Hoodsport Wa
Posts: 643
Is the engine setting any trouble codes? Was stalling the reason they replaced the lift pump?
Sounds like you may have a fuel restriction or a vacuum (air) leak in the fuel line somewhere. Did they change the fuel filter when they changed out the lift pump? It may be a good idea to replace the fuel filter and cut the old one open to look for signs of fuel line deteriorating, I.E. black rubber. But agree with MM, check the fittings at the lift pump first.
__________________
2000 Alpine 36 FDS #74058
04 Jeep Wrangler TJ
"On the road to find out..."
Alpine36 is offline   Reply With Quote
Old 04-28-2020, 05:47 PM   #5
Senior Member
 
Arkansas RV's Avatar


 
Join Date: Jul 2016
Location: Batesville, AR
Posts: 191
AirDog fuel pumps

Quote:
Originally Posted by MountainMike View Post
Where I use to work we had a saying " for every action there is a reaction". They replaced the lift pump look at the fitting for the lift pump, my 04 has oring fitting connecting to the pump I would think that one of the orings has a cut or the flare connection is not tight. I am going to bypass the lift pump and install a Fass pump and filter system on engine in the next couple weeks. I believe this is a better system than the original lift pump.
Mike, if you havenít purchased your Fass pump yet, you might check out the industrial AirDog pumps, a more HD pump with a lot of advantages over the Fass. Check it out in the Cummins engine section.
Richard
Arkansas RV is offline   Reply With Quote
Reply

Tags
cummins, fuel, problem



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
Cummins 8.3 ISC (year 2000) vs. Cummins 6.7 ISB (year 2016) ChewyRV Class A Motorhome Discussions 1 01-01-2020 07:45 AM
Cummins 350 ISC fuel filter removal jsm660 Spartan Motorhome Chassis Forum 7 11-11-2014 04:38 PM
Cummins ISC second fuel filter PandK Cummins Engines 7 03-06-2013 06:31 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 03:11 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×