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.
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 11-21-2011, 10:50 AM   #15
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Yes on the gen or yes on the dash?
__________________

__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner 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 11-21-2011, 11:32 AM   #16
Senior Member
 
LVJ58's Avatar
 
Join Date: Jul 2000
Location: Las Vegas, NV
Posts: 2,146
I tried pressing & holding the Stop/Start rocker switch on our 2000 Onan 5.5kw unit in the OFF position however on ours the pump doesn't run.

Recently, I installed a toggle switch on the generator frame to power the pump which I run 30 seconds or so before starting the engine. Priming the carburetor has greatly reduced engine cranking time.

Curious though why the Start/Stop switch on ours doesn't work on the OFF priming mode.
__________________

__________________
Jim & SherrySeward

2000 Residency 3790 v10 w/tags 5 Star tune & Banks system Suzuki XL7 toad
LVJ58 is offline   Reply With Quote
Old 11-21-2011, 12:18 PM   #17
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Maybe the wiring harness didn't provide for that. I would see if the switch has that contact terminal and run a wire under the dash, out thru the doghouse and back to the genny.
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 11-21-2011, 01:02 PM   #18
Member
 
Poke a Long's Avatar
 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Oct 2011
Posts: 30
We have a 2001 with a 4K Onan, the manual states, press off button and hold for 30 sec then press the start for 3 sec, if it fails to start repeat sequence. Once mine starts it stays running. However, my Gen switch in galley doesn't seem to work, maybe some day I'll figure it out. Good luck.
__________________
Poke a Long is offline   Reply With Quote
Old 11-21-2011, 01:45 PM   #19
Senior Member
 
Cat320's Avatar
 
Fleetwood Owners Club
American Coach Owners Club
Join Date: Mar 2011
Posts: 4,755
I have an 8 KW Onan Quiet Diesel. According to the manual, the only time it needs to be primed is after the fuel filter has been changed or after it has run out of fuel. Priming is done by holding the "stop" switch down for one minute. For normal starting, hold the "start" switch down until it starts.
__________________
2014 American Eagle 45T
DD 500
Pulling a Honda CRV
Cat320 is online now   Reply With Quote
Old 11-21-2011, 02:28 PM   #20
Senior Member
 
GMRHost's Avatar
 
Vintage RV Owners Club
Ford Super Duty Owner
Join Date: Oct 2011
Location: Jasper, Missouri
Posts: 339
My 4.0 BFA does not prime by holding down the switch, but I installed a momentary-on toggle switch to provide a hot jump to the fuel pump (with an in-line fuse) and am able to prime it that way.
On many of these generators, the "starter" is the generator windings themselves, there is no starter "motor".
__________________
Tom - Retired OTR 20 years 2 million mile club - 1984 Diamond Maxi
I love everybody! Even some above ground!
GMRHost is offline   Reply With Quote
Old 11-22-2011, 06:53 AM   #21
Senior Member
 
monkey's Avatar
 
Join Date: Sep 2011
Location: Arkansas
Posts: 2,250
As soon as it quits raining, I'll check it out... I can listen to the fuel pump to see if it runs when the switch is depressed to Off.... Thanks again everybody,,,, guess I wasn't the only one wondering this.... I let it sit about a month and had to crank on it 4-5 times (just a few seconds each) to get it started.... Darel
__________________
Monkey, pilot of a Great Dane hauler,
2015 Silverado 2500 Duramax/Alison 4x4 CrewCab 2016 Cougar 28SGS
1ST CAV
monkey is offline   Reply With Quote
Old 11-22-2011, 09:24 AM   #22
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Mine only sat for a week, but I had to prime it 4-5 times to get it going at the dunes.

Dunner at the dunes, duning.
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 11-22-2011, 10:08 AM   #23
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 22,811
Well.. That is how mine is supposed to work.

However to answer the question "What do I do if that does not work"

easy, instead of pressing OFF, press ON, or rather "tap" it, Let the engine turn over like one time.. Wait for like 30 seconds and press ON again to start.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 11-22-2011, 10:13 AM   #24
Senior Member
 
Join Date: Nov 2005
Posts: 3,336
Quote:
Originally Posted by Cat320 View Post
I have an 8 KW Onan Quiet Diesel. According to the manual, the only time it needs to be primed is after the fuel filter has been changed or after it has run out of fuel. Priming is done by holding the "stop" switch down for one minute. For normal starting, hold the "start" switch down until it starts.
Diesel and gas engines are totally different animals. The gas engine of this era uses a carburetor. When the unit sits unused the gas in the bowl will evaporate. Pushing the start button to the prime position fills the bowl again. Then when you push the button to the start position the pistons moving downward create enough vacuum to draw the gas through the jets and into the cylinder.

The diesel engine uses a totally sealed high pressure system consisting of a pump, steel lines, and injectors to deliver the fuel to the cylinders. There is no chance of the fuel evaporating before it can be introduced to the combustion chamber unless you have a leak. Since the system is sealed priming is unnecessary.
__________________
Hikerdogs
2013 Adventurer 32H
Hikerdogs is offline   Reply With Quote
Old 11-23-2011, 01:37 PM   #25
Senior Member
 
Cat320's Avatar
 
Fleetwood Owners Club
American Coach Owners Club
Join Date: Mar 2011
Posts: 4,755
Quote:
Originally Posted by Hikerdogs View Post
The diesel engine uses a totally sealed high pressure system consisting of a pump, steel lines, and injectors to deliver the fuel to the cylinders. There is no chance of the fuel evaporating before it can be introduced to the combustion chamber unless you have a leak. Since the system is sealed priming is unnecessary.
As stated earlier, any diesel engine must be primed any time the fuel system is "opened", and the seal broken...as in changing the fuel filter (s).
__________________
2014 American Eagle 45T
DD 500
Pulling a Honda CRV
Cat320 is online now   Reply With Quote
Old 11-23-2011, 01:41 PM   #26
Senior Member
 
Tha_Rooster's Avatar
 
Join Date: Aug 2008
Location: Georgia
Posts: 4,517
Quote:
Originally Posted by JimM68 View Post
I know holding down off to prime my onan diesel generator is true and it does work. Heaven knows I run it out of gas often enough

Not sure about a gas genny tho...
Don't recall how it was on the pace arrow...
For my diesel I hold down start it primes then starts.
__________________
2007 Fleetwood Revolution LE 40V
Tha_Rooster is offline   Reply With Quote
Old 11-26-2011, 08:43 PM   #27
Senior Member
 
Winnebago Owners Club
Join Date: May 2009
Location: AZ Mountains
Posts: 394
BY the late 90s, the 'push to prime' was standard. Before that, there was no priming capability. In my case, I have bored a tiny hole in the intake manifold (plastic, I might add), and spray one seconds worth of starting fluid in the hole in the manifold. Wait another few seconds, and the gem fires up like it was new.
__________________

__________________
nbounder is offline   Reply With Quote
Reply

Tags
gas, generator, onan



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
Long question, gas cap & check engine light Catcoach Ford Motorhome Chassis Forum 29 11-20-2011 07:53 AM
Switching from elec to gas on water heater stotaman RV Systems & Appliances 3 10-18-2011 05:50 PM
Onan Generator question Rick Flores MH-General Discussions & Problems 8 11-21-2009 10:17 PM
The Gas Station Design Conspiracy! RVThere RV'ing Humor & Crazy but True Stories 10 09-06-2008 01:01 PM
Onan Gas Generator won't start John Hilley Winnebago Industries Owner's Forum 3 12-03-2007 06:24 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:54 PM.


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