Go Back   iRV2 Forums > MOTORHOME FORUMS > Class C 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 10-16-2015, 07:21 PM   #1
Junior Member
 
Join Date: Aug 2015
Posts: 10
Generator Problem

I have a Kohler generator model 4.5CM21-RV in my 79 Coachmen Leprechaun that will not start. I have changed the fuel filter and also replaced the fuel pump. For some reason I am not getting any gas to the generator. Looking for any trouble shooting tips or ideas as to what the problem/fix could be. The main gas tank is full and the auxiliary tank is just about empty for winter storage. Is there possibly another gas switch elsewhere I do not know off. Any help is greatly appreciated.
__________________

__________________
rmoo 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 10-16-2015, 10:10 PM   #2
Senior Member
 
BFlinn181's Avatar
 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 16,251
Which tank does the generator pull from? Does it switch over when you switch fuel tanks? Also, no fuel could be the result of an old, cracked fuel line. You might disconnect the fuel line and try blowing air in the line. If the fuel line is intact, you should hear bubbling in the gas tank. (Be sure to remove gas cap first) If no bubbling, good chance is you need a new fuel line.
__________________

__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is offline   Reply With Quote
Old 10-25-2015, 07:42 PM   #3
Junior Member
 
Join Date: Aug 2015
Posts: 10
Just a quick update. I changed the fuel line from the main gas tank to the generator. I am still unable to get fuel through the line. I'm not sure if this makes a difference but the gas gauge for the main tank works sometime and other times it shows empty when it is full. I also inspected the three way valvue at the main tank and it is working fine with no blockage.
__________________
rmoo is offline   Reply With Quote
Old 10-26-2015, 01:47 AM   #4
Senior Member
 
sirpurrcival's Avatar
 
National RV Owners Club
Join Date: Apr 2010
Posts: 1,069
Quote:
Originally Posted by rmoo View Post
Just a quick update. I changed the fuel line from the main gas tank to the generator. I am still unable to get fuel through the line. I'm not sure if this makes a difference but the gas gauge for the main tank works sometime and other times it shows empty when it is full. I also inspected the three way valvue at the main tank and it is working fine with no blockage.

Do what I did when I was sorting my generator out. Run a temp fuel line to a jug of gas and see if you can run that way. You will be able to confirm if the problem is at the generator side of things if it doesn't run and at the fuel source end of things if it does.
__________________
1999 - National Tropi Cal
sirpurrcival is offline   Reply With Quote
Old 10-26-2015, 06:42 AM   #5
Senior Member
 
Country Coach Owners Club
Join Date: Mar 2014
Posts: 100
I have a onan gas generator and if it's not started regularly the carb gums up and will not start. Cleaned carb and got it running again but after sitting for just one month of sitting it wount run again, onan does not recommend cleaning they recommend replacment
__________________
Hondalee is offline   Reply With Quote
Old 10-26-2015, 09:38 AM   #6
Senior Member
 
BFlinn181's Avatar
 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 16,251
Quote:
Originally Posted by Hondalee View Post
I have a onan gas generator and if it's not started regularly the carb gums up and will not start. Cleaned carb and got it running again but after sitting for just one month of sitting it wount run again, onan does not recommend cleaning they recommend replacment
Onan doesn't sell a gasket kit for the carb. A real cleaning requires dismantling and replacing the gaskets, that's why they say replace, not clean. If you run some Sea Foam through the engine it will usually clean it up. I'd say for your's to gum up again after a month, it might have had some varnish still in it.

Shop Sea Foam 16-oz Fuel Additive at Lowes.com
__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is offline   Reply With Quote
Old 10-26-2015, 11:06 AM   #7
Senior Member
 
Join Date: Sep 2011
Location: South West Michigan
Posts: 394
If it uses the vehicle tank you a quarter tank or more. You keep running low the fuel will siphon back. I have a peanut butter jar with 2 hose barbs in the top one hooks to a fuel line the other has a hose to pull a vacuum and see what kind of crap comes out of the line . I had to purge a quart out at least to get decent fuel. I keep the jar in the storage compartment incase I have trouble. Have loaned it out several times
__________________
mikell is offline   Reply With Quote
Old 10-28-2015, 08:03 AM   #8
Junior Member
 
Join Date: Aug 2015
Posts: 10
I disconnected the fuel line and ran it into a gas can. I did it with both the old and new fuel pumps with no luck. I also sprayed the carb with carb cleaner. I did not take it apart though.
__________________
rmoo is offline   Reply With Quote
Old 10-29-2015, 12:44 AM   #9
Senior Member
 
sirpurrcival's Avatar
 
National RV Owners Club
Join Date: Apr 2010
Posts: 1,069
If you spray some ether in the carb, will it run then?
__________________
1999 - National Tropi Cal
sirpurrcival is offline   Reply With Quote
Old 11-05-2015, 11:07 PM   #10
Junior Member
 
Join Date: Aug 2015
Posts: 10
So I spoke with a small engine repair guy over the phone and he informed me that it would be in my best interest to get a new carb for the generator since it has not been started in over seven years. With that said do they even sell a replacement carb for this generator and if so where. I looked on the internet with no luck. It is a Kohler 4.5CM21-RV, Ser#024382, SPEC 13912A. The guy said something about if he rebuilt it the chances of it working properly were not good.
__________________

__________________
rmoo is offline   Reply With Quote
Reply

Tags
generator



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


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:41 PM.


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