Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 06-03-2016, 10:38 AM   #1
Senior Member
 
Join Date: Apr 2016
Location: la grange
Posts: 322
Onan Generator

I have a Greyhawk 2009 with a Onan generator, Problems I have had are sometimes after I shut the unit off it will trip the breaker on the generator, if I start the generator seems like you have to crank quite a while other times it will start quick, and when you shut it off it shakes the coach a lot.Worked on large generators years ago but never one this small just seems not right the way it acts. Has 150 hrs
__________________

che57vy is offline   Reply With Quote
Old 06-04-2016, 03:56 PM   #2
Senior Member
 
Join Date: Jul 2014
Location: NJ
Posts: 195
Well i havent had any problems with mine tripping the breaker but mine does need to crank a while before starting. I assume it takes a while to prime the lines up with fuel. Mine also shakes when shutting off. I need to hold the off button for a few seconds until it completly shuts down other wise it will stay running. Im also gonna assume that is normal for a carbureted air cooled motor. They run hot especially when parked so when you kill the spark with the shut off switch the motor will diesel and ignite the fuel because its so hot.
__________________

Greyhawk01 is offline   Reply With Quote
Old 06-04-2016, 05:51 PM   #3
Senior Member
 
Jagiven's Avatar
 
Join Date: May 2012
Location: Minnesota
Posts: 4,110
I'm not a genny expert, but regarding the circuit breaker, breakers get weak with age and use. So you may need to replace it. 150 hours on a 7 yr old MH is not many hours. A genny should be exercised at least 1 hour each month.

Regarding hard starting, could be a few things. Have you changed the spark plug and wires, make sure to have the correct plug gap. Fuel can also play a big part too. Modern fuel is full of ethanol, it absorbs it's mass in water, it gums up carbs very easily. On a MH I would make it common practice to use a fuel stabilizer or ethanol free gas.
Jagiven is offline   Reply With Quote
Old 06-05-2016, 05:59 AM   #4
Senior Member
 
edatlanta's Avatar
 
Join Date: Dec 2009
Location: Maplesville, AL - Home Base
Posts: 2,523
Long crank time makes me think the Onan isn't being primed prior to the starting attempt. On mine push the start/stop switch to the stop position and hold it to prime. Then try the start.
__________________
Ed
KM4STL

2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof
edatlanta is offline   Reply With Quote
Old 06-05-2016, 06:45 AM   #5
Senior Member
 
Join Date: Jun 2015
Location: Jackson
Posts: 1,038
Actually the manual for my Onan states it needs to run 2 hours UNDER HALF LOAD. Maybe its different for older models, but you may be surprised by what you find in your manual.

At any rate, just running it isn't enough. Putting some load on it helps exercise the windings or some such thing.
__________________
Currently between RV's, and it might stay that way !
2017 F-150 XLT 3.5 EcoBoost 10 Speed SCREW Short Bed 3.55 rear axle - 1818 lbs payload
Sold: 2015 Greyhawk 29MV, 2014 Jayco X17z, 2012 Jay Series 1207

Jopopsy is offline   Reply With Quote
Old 06-05-2016, 08:46 AM   #6
Senior Member
 
NC Roamer's Avatar
 
Join Date: Jul 2014
Location: Fuquay-Varina
Posts: 711
Quote:
Originally Posted by edatlanta View Post
Long crank time makes me think the Onan isn't being primed prior to the starting attempt. On mine push the start/stop switch to the stop position and hold it to prime. Then try the start.
When cold, I have to hold down the prime switch on my Onan for at least 10-14 seconds before trying to start it. Even then it sometimes requires a second priming of 5-6 seconds to catch.
__________________

2014 Greyhawk 31FK
2007 Honda Shadow Sabre 1100cc
NC Roamer is offline   Reply With Quote
Old 06-05-2016, 10:07 AM   #7
Senior Member
 
Join Date: Apr 2016
Location: la grange
Posts: 322
Mine is that way too, sometimes it will try to start then I have to start it again.
__________________

che57vy is offline   Reply With Quote
Reply

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


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 05:37 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.