RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×


Reply
 
Thread Tools Display Modes
Old 09-19-2020, 03:53 PM   #1
Senior Member
 
Join Date: Apr 2017
Posts: 145
ONAN The Barbarian

My 4000 gas model is not running smoothly. I have tried all the DIY maintenance and thinking about taking it to the ONAN mechanic.

If you have gone this route for a fix, have you been satisfied with the result?
__________________
2011 Sunseeker 2860
2006 Honda CR-V
PoppySteve is offline   Reply With Quote
Old 09-19-2020, 03:58 PM   #2
Site Team
 
wmtire's Avatar
 
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 24,693
I have no help for you, but as a site team member, I do want to comment that yours is one of the more creative thread titles. I really got a kick from it.
__________________
2011 Flagstaff 831 RLBSS

I often say to myself, "I can't believe that cloning machine worked."
wmtire is online now   Reply With Quote
Old 09-19-2020, 05:39 PM   #3
Senior Member
 
Iggy's Avatar
 
Join Date: Jul 2010
Posts: 7,864
How many hours on the generator?
Have you tried carborator cleaner sprays?
What altitude are you at? You know about the adjustment?
Have you tried this stuff in your gas tank on the next trip?
Berryman's B-12?
1 can per 20 gallons of gas. (80 gallong - 5 cans)
You probably have a 55 gallon tank so 3 cans would be good.
But do it when you plan a good long trip ont he road.
I add this stuff in my gas tank and run my generator for awhile under load and ensure the generator gets warmed up good.

This stuff clears the lines, filter hoses and carb from built up varnish when you have gas sitting for a long time.

$3.47 a can at Walmart
Attached Thumbnails
Click image for larger version

Name:	Screenshot 2020-09-19 153909.jpg
Views:	39
Size:	142.2 KB
ID:	239490  
__________________
2012 Georgetown XL 378TS
Facebook Georgetown Owners Club
Iggy is offline   Reply With Quote
Old 09-19-2020, 06:06 PM   #4
Senior Member
 
Join Date: Apr 2017
Posts: 145
Well thanks wmtire. I try to add a little humor when I can!

And Iggy, thanks for the suggestion. I used seafoam/gas solution direct from a 2 gallon gas jug with not much luck. 385 hours at 250 sea level.

I was just wondering if any ONAN service was worthwhile.
__________________
2011 Sunseeker 2860
2006 Honda CR-V
PoppySteve is offline   Reply With Quote
Old 09-19-2020, 06:12 PM   #5
Senior Member
 
Iggy's Avatar
 
Join Date: Jul 2010
Posts: 7,864
Quote:
Originally Posted by PoppySteve View Post
Well thanks wmtire. I try to add a little humor when I can!

And Iggy, thanks for the suggestion. I used seafoam/gas solution direct from a 2 gallon gas jug with not much luck. 385 hours at 250 sea level.

I was just wondering if any ONAN service was worthwhile.
Seafoam is ok but if you search Berryman's B-12 to see the difference it worht a $12 before going to an Onan dealer.

They will probably charge you a few hundred just to look at it and then replace what they think is the problem.

It the needle valve adjustment on the carborator knob set at sea level?


Here is a writeup from someone who had similiar issues. Please read.

https://www.irv2.com/forums/f84/onan...es-256397.html
Good luck.
__________________
2012 Georgetown XL 378TS
Facebook Georgetown Owners Club
Iggy is offline   Reply With Quote
Old 09-19-2020, 07:35 PM   #6
Senior Member
 
Join Date: Apr 2017
Posts: 145
Yes needle valve set at sea level.

I might try the B-12.

Thanks for the link to the post. I am a DIY guy so might try some of those things and see how it goes.
__________________
2011 Sunseeker 2860
2006 Honda CR-V
PoppySteve is offline   Reply With Quote
Old 09-28-2020, 01:07 PM   #7
Senior Member
 
Join Date: Jun 2013
Posts: 854
where are you getting gas? Some states allow up to 15% ethanol in their gas. Ethanol is attracts moisture and can eat up rubber fuel lines that are not rated for use with it. The rubber breaks down and can clog jets. I had a 2007 toy hauler with Onan 5500 and found the rubber hoses were very soft to the touch. Trailer was built before wide spread use of ethanol and the knowledge of what happens to older engines. If you read the warning on a pump it will state it is not to be used in older vehicles, a real problem for lawn mowers, pre-FI motorcyles, etc.
nayther is offline   Reply With Quote
Reply

Tags
onan

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 09:01 PM.