Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-03-2016, 12:43 PM   #1
Adventure Gypsy
 
kupchu9702's Avatar
 
2015 Interstate Grand Tour
Phoenix , Arizona
Join Date: May 2016
Posts: 23
Images: 1
Angry Propane filter?

I have the Onan generator, on my 2015 Grand Tour, in for a level 2 service at 250 hrs., at Cummins Onan service center, not first time being serviced. They have discovered that the throttle body is gummed up. At first they thought the throttle body was not working so they ordered a new throttle body. So they dropped generator to remove it. Once removed they inspected it they found the body was not inoperable but severely gummed up. They tried cleaning it out but said it was so bad they wanted to replace with a new one. I asked why it was this way and they said it was due to poor fuel and moisture. At first they said it was due to not using it frequently enough and that I should run every month to keep it cleaned out. I did have this issue with a gas generator I had in a previous RV. I am aware of gas and diesel fuel gumming, but have never heard of propane fuel doing this as well.

I do see that in-line filters for propane do exist. Has anyone else had this issue with their unit or has anyone installed a filter just for this issue?

They want $1500 to do this. Not under warranty as it was fuels fault, not malfunction of parts. Am I just being jerked around?

Pretty pissed off as I and between a rock and a hard place with this.

Any help or ideas will be appreciated.
__________________

__________________
Kenneth
2015 AI Grand Tour on 2014 MB Sprinter
kupchu9702 is offline   Reply With Quote
Old 08-03-2016, 01:53 PM   #2
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,603
Never checked mine but isn't there any air filter? And not sure how propane vapor could gum up the TB. And assuming it does, not sure why it can't be cleaned. I'm initially voting "jerked around".
__________________

__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
73shark is offline   Reply With Quote
Old 08-03-2016, 02:43 PM   #3
Agent 86
 
J. Morgan's Avatar
 
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton , Arkansas
Join Date: Mar 2013
Posts: 4,364
Images: 11
Gummed up from fuel in about a year?

I am not going to buy that on first glance.

I have lift trucks that have run for 30 years on propane and never gummed up once....

On the other side of the coin I have had four propane regulators plug up on my Airstream in three years use....


Gradiens super tenui glacie.
__________________
The fact that I am opinionated does not presuppose that I am wrong......

J. Morgan is offline   Reply With Quote
Old 08-03-2016, 02:54 PM   #4
3 Rivet Member
 
1988 Argosy 32
Lomita , California
Join Date: Aug 2012
Posts: 122
you need to drop the tank and do a visual internal check, you could have got a load of bad
fuel. (tank cleaning ?)
__________________
Wolfe is offline   Reply With Quote
Old 08-03-2016, 02:56 PM   #5
Rivet Master

 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 3,575
Quote:
Originally Posted by Wolfe View Post
you need to drop the tank and do a visual internal check, you could have got a load of bad
fuel. (tank cleaning ?)
How does one look inside a propane tank (if I understand this situation correctly)?
__________________
OTRA15 is offline   Reply With Quote
Old 08-03-2016, 02:57 PM   #6
4 Rivet Member
 
1991 25' Excella
Stanfield , Oregon
Join Date: May 2016
Posts: 310
The fuel is injected after the throttle body, usually if the throttle body is getting varinshed its from gasses going through the pcv valve. Try using a better oil and putting more load on the generator they are designed to run around 50-70% load. The regulator for the lpg well remove any oil in the lpg so its not fuel related.
__________________
SpletKay06 is offline   Reply With Quote
Old 08-03-2016, 03:24 PM   #7
Agent 86
 
J. Morgan's Avatar
 
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton , Arkansas
Join Date: Mar 2013
Posts: 4,364
Images: 11
I think you are right, the gum is much more likely to have come from PCV.

That being the case, I say it IS a warrantee issue.


Gradiens super tenui glacie.
__________________
The fact that I am opinionated does not presuppose that I am wrong......

J. Morgan is offline   Reply With Quote
Old 08-03-2016, 05:40 PM   #8
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,603
On a gas engine, the PCV is vented to the bottom of the carb or TB or intake manifold because there's little or no vacuum to suck out the blow-by from the crankcase. Wonder how it works on a LP engine.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
73shark is offline   Reply With Quote
Old 08-03-2016, 08:08 PM   #9
4 Rivet Member
 
1991 25' Excella
Stanfield , Oregon
Join Date: May 2016
Posts: 310
Quote:
Originally Posted by 73shark View Post
On a gas engine, the PCV is vented to the bottom of the carb or TB or intake manifold because there's little or no vacuum to suck out the blow-by from the crankcase. Wonder how it works on a LP engine.
Most newer engines gas included run the pcv in before the throttle body. Its also getting more popular to use a small vacuum pump to assist.
__________________
SpletKay06 is offline   Reply With Quote
Old 08-03-2016, 08:12 PM   #10
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,603
Quote:
Originally Posted by SpletKay06 View Post
Most newer engines gas included run the pcv in before the throttle body. Its also getting more popular to use a small vacuum pump to assist.
Can you point me to some cars or trucks that do that?
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
73shark is offline   Reply With Quote
Old 08-03-2016, 08:25 PM   #11
4 Rivet Member
 
1991 25' Excella
Stanfield , Oregon
Join Date: May 2016
Posts: 310
Quote:
Originally Posted by 73shark View Post
Can you point me to some cars or trucks that do that?
3.6 pentistar, 5.7 Hemi's, used in Jeeps and Ram trucks the list goes on. The Chevy Aveo's had the same problem as well with the pcv cruding up the throttle body's
__________________
SpletKay06 is offline   Reply With Quote
Old 08-03-2016, 09:23 PM   #12
Agent 86
 
J. Morgan's Avatar
 
1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton , Arkansas
Join Date: Mar 2013
Posts: 4,364
Images: 11
Quote:
Originally Posted by 73shark View Post
On a gas engine, the PCV is vented to the bottom of the carb or TB or intake manifold because there's little or no vacuum to suck out the blow-by from the crankcase. Wonder how it works on a LP engine.

Every small engine I have ever seen has the PCV draw just behind the air filter.

Now, I in no way claim to have seen a majority of small engine types and brands or even a sizable fraction thereof.


Gradiens super tenui glacie.
__________________
The fact that I am opinionated does not presuppose that I am wrong......

J. Morgan is offline   Reply With Quote
Old 08-03-2016, 11:36 PM   #13
Adventure Gypsy
 
kupchu9702's Avatar
 
2015 Interstate Grand Tour
Phoenix , Arizona
Join Date: May 2016
Posts: 23
Images: 1
I hate to show my ignorance, but what is a pcv valve?
__________________
Kenneth
2015 AI Grand Tour on 2014 MB Sprinter
kupchu9702 is offline   Reply With Quote
Old 08-03-2016, 11:46 PM   #14
Adventure Gypsy
 
kupchu9702's Avatar
 
2015 Interstate Grand Tour
Phoenix , Arizona
Join Date: May 2016
Posts: 23
Images: 1
Where do you go to get LPG issues worked on? My dealer is actually a Mercedes dealer with Airstream motor coach as a side line. Won't touch LPG issues. This is why I took it to Cummins dealer. Since I don't have much knowledge regarding this, I feel I am getting taken.
__________________

__________________
Kenneth
2015 AI Grand Tour on 2014 MB Sprinter
kupchu9702 is offline   Reply With Quote
Reply


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
Will paper air filter change dynamics of engine with K&N filter? Astrodokk Mechanics Corner - Engines, Transmission & More... 23 09-05-2016 02:24 PM
Propane Gas Detector Went off Last Week-Turns Out NOT the Propane breezyway Electrical - Systems, Generators, Batteries & Solar 4 08-16-2014 08:56 AM
Newbie Advice on Propane and Propane Accessories Socal1 LP Gas, Piping, Tanks & Regulators 1 07-15-2013 12:36 PM
Water filter system 53flyingcloud Our Community 2 07-05-2002 04:43 PM
Water Filter Follow-Up ViewRVs General Motorhome Topics 6 05-27-2002 10:37 AM


Virginia Campgrounds

Reviews provided by



Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:01 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.