Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 12-15-2015, 07:44 AM   #1
Member
 
Join Date: Sep 2014
Location: Cumming
Posts: 72
Generator overheating solution?

My generator has sputtered and quit on me a few times this summer while on a trip from Georgia to Arizona and Utah. The mechanics I've talked to have told me it is due to "vaporlock". They said the heat from the air, plus the heat coming from the engine causes the gasoline to vaporize in the line so that they pump can't pump enough fuel to the generator. They also mentioned that the generator's air intake is nearly covered by the access door, since there is only about 1/4 to 3/8 inch clearance from the door to the intake. I removed the door from the RV and that seemed to help a lot, but the RV looks like crap with that door missing and the green Onan door visible. I've considered cutting a hole in the door and installing a vent to allow the generator to get more air. I've toyed with the idea of just putting a mesh screen over the hole, using a vent that would be used on the eaves of a house, or a boat engine vent.

Has anyone else had this issue and resolved it? I'd love to hear what you did.
__________________

__________________
Current:
2017 Jayco Seneca 37TS
Toad: 2009 Ford Flex

Former:
2015 Jayco Greyhawk 31DS
Toad: 2009 Ford Flex
jvteach77 is offline   Reply With Quote
Old 12-15-2015, 07:56 AM   #2
Senior Member
 
Grumpy's Avatar
 
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 4,528
If everything is open underneath it gets plenty of air. Don't forget if you get to a 1/4 tank or less of fuel the geny will shut down so you don't get stranded (out of gas) someplace. So if your at or close to 1/4 while driving it will shut down.
__________________

__________________
DISNEY LOVERS
PINNACLE 2015 38FLSA. aka: "Roam Sweet Home"
Grumpy is online now   Reply With Quote
Old 12-15-2015, 08:36 AM   #3
Member
 
Join Date: Sep 2014
Location: Cumming
Posts: 72
wasn't the fuel level

We checked the fuel level and it was well over 1/2 a tank whenever the generator would quit. I would have thought that it was getting enough air as it was, but it just doesn't seem too. This has only happened when it was about 95 in Georgia and 106 in New Mexico. In New Mexico, it was working fine, but we stopped to check into a campground and after running for a few minutes while stopped it cut off again.
__________________
Current:
2017 Jayco Seneca 37TS
Toad: 2009 Ford Flex

Former:
2015 Jayco Greyhawk 31DS
Toad: 2009 Ford Flex
jvteach77 is offline   Reply With Quote
Old 12-15-2015, 09:05 AM   #4
Senior Member
 
Grumpy's Avatar
 
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 4,528
Your control panel should be flashing a fault code which will give you a good indication of the problem. 14 ( one then four) indicates a fuel issue. Those codes are readily found on the internet.
__________________
DISNEY LOVERS
PINNACLE 2015 38FLSA. aka: "Roam Sweet Home"
Grumpy is online now   Reply With Quote
Old 12-15-2015, 09:37 AM   #5
Senior Member
 
mike837go's Avatar
 
Join Date: May 2015
Location: Campbell Hall
Posts: 2,802
If you are mechanically inclined, consider re-routing the fuel line. Away from the hot engine, exhaust system, etc.
__________________
TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck


Sitting in The Cheap Seats.
And proud of it!
mike837go is offline   Reply With Quote
Old 12-18-2015, 12:35 PM   #6
Senior Member
 
Join Date: Jul 2014
Location: NJ
Posts: 172
Are you having this problem while traveling or camping? If its getting hot while traveling consider making some sort of air dam or ram air hose to direct more air around the genny. If it shuts down while parked keep the door open and direct a small fan at it. Like mike said keep the fuel line away from the heat.
Greyhawk01 is offline   Reply With Quote
Old 01-28-2016, 08:00 PM   #7
Junior Member
 
Join Date: Jan 2016
Location: Bethel Park
Posts: 2
Quote:
Originally Posted by jvteach77 View Post
My generator has sputtered and quit on me a few times this summer while on a trip from Georgia to Arizona and Utah. The mechanics I've talked to have told me it is due to "vaporlock". They said the heat from the air, plus the heat coming from the engine causes the gasoline to vaporize in the line so that they pump can't pump enough fuel to the generator. They also mentioned that the generator's air intake is nearly covered by the access door, since there is only about 1/4 to 3/8 inch clearance from the door to the intake. I removed the door from the RV and that seemed to help a lot, but the RV looks like crap with that door missing and the green Onan door visible. I've considered cutting a hole in the door and installing a vent to allow the generator to get more air. I've toyed with the idea of just putting a mesh screen over the hole, using a vent that would be used on the eaves of a house, or a boat engine vent.

Has anyone else had this issue and resolved it? I'd love to hear what you did.
We have had this ongoing issue with our 2011 Greyhawk DS since we bought it new. Dealer has taken it to Cummings twice. It seems to happen only when we're on the road and after its been running for about an hour or if it's hot outside and we're traveling. Never let our gas get below 1/2 tank. Dealer has taken it to Cummings twice and they can't figure it. Dealer finally has decided it's over heating
Happycamper640 is offline   Reply With Quote
Old 01-28-2016, 08:19 PM   #8
Senior Member
 
Join Date: Dec 2015
Location: Houston
Posts: 780
Quote:
Originally Posted by mike837go View Post
If you are mechanically inclined, consider re-routing the fuel line. Away from the hot engine, exhaust system, etc.
And run it with some metal fuel line for a considerably longer distance. This should help cool the fuel better and hopefully prevent vapor lock. There are more expensive solutions but this generally works like a charm.
__________________
2016 Jayco Eagle 330RSTS = "Madame Maxime"
Maxxis M8008 E rated Tires and 16" Wheel Upgrade
Dual A/C 15K BTU, 14K Equalizer WD hitch with SC
King Bed with Java Interior, (2X) Yamaha EF2000isV2
2012 Ram 4500, 6.7L Cummins Turbo Diesel, MegaCab = "Hagrid"
8'x12' BMCM Stake Bed, Cabin Chassis, 2WD
360 degree Virtual Tour
Fairenatic is offline   Reply With Quote
Old 01-29-2016, 05:01 AM   #9
Senior Member
 
edatlanta's Avatar
 
Join Date: Dec 2009
Location: St. Andrews State Park, Panama City, FL
Posts: 2,471
If you can find it, fill your tank with non-ethanol gas. You will need to run your tank down as low as possible to leave as little ethanol in the tank as possible. Then try your road trip. Ethanol gas vaporizes much easier than non-ethanol. If your problem goes away then you have vapor-lock as was mentioned above. The only solutions I know of for this issue is: non-ethanol fuel all the time (more expensive and not always availablel), fuel cooling prior to the generator (expensive ?), or only travel in the winter (not a good option).

The problem is ethanol in gas. It needs to go away IMHO.
__________________
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 01-31-2016, 11:13 PM   #10
Senior Member
 
Join Date: Jun 2015
Location: Elk city
Posts: 171
If you can find a custom metal shop that does luver work, like everyone used to do to their car hoods and pickup tail gates. That would look pretty good on that gen. Door. A old trick that I used to see many times on the old carburetor cars is wooden clothesline pens. Guys would place them about 2 inches apart on the gas line to help displace the heat. Don't laugh until you try it!
__________________

Mwade 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 07:05 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.