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10-31-2017, 05:36 AM
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#1
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Junior Member
Join Date: Oct 2017
Posts: 1
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Onan Generator Fuel pump
I live in New Brunswick Canada and have a Onan Marquis 7000 gen set Model #7NHMFA26106F and have no fuel flow at the carb when cranking. I assume my fuel pump needs replacement. Is anyone aware of third party fuel pumps that would work for me? Appreciate your help.
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10-31-2017, 05:40 AM
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#2
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Senior Member
Join Date: Feb 2017
Posts: 262
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Yes here in the states you can buy a exact fit at napa auto parts I got mines there for 40.00 dollars
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10-31-2017, 06:19 AM
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#3
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Senior Member
Join Date: Oct 2015
Location: Brighton, MI
Posts: 775
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Before you buy a new one you can test the current one. Disconnect hose from fuel pump to tank. Then run a short fuel line from pump to a gas can and see if it will pull gas.
If there is a crack in the fuel line going to the tank the pump can't pull a vacuum and suck fuel up.
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Hank & Lynda
2003 Winnebago Adventurer 35U, Workhorse W22
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10-31-2017, 07:14 AM
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#4
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Senior Member
Join Date: Aug 2017
Posts: 2,093
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Quote:
Originally Posted by piet
I live in New Brunswick Canada and have a Onan Marquis 7000 gen set Model #7NHMFA26106F and have no fuel flow at the carb when cranking. I assume my fuel pump needs replacement. Is anyone aware of third party fuel pumps that would work for me? Appreciate your help.
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You should be able to pick one up at any auto parts store ( Napa, Parts source , Canadian tire .....). Take your old one in so they can get the correct fittings for the fuel line. The pressure should be in the 3 to 7psi range. Replaced mine 2 yrs ago and not a problem since.
I did test the pump , and it seemed to work Ok. For some reason , it did notwork properly on the generator. Change your fuel filter at the same time.
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1993 Tiffin Allegro Bay 32'
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10-31-2017, 08:59 AM
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#5
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,626
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!
I would disconnect the fuel line to the pump to be sure you are getting fuel to the pump. Keep her between the ditches!
Good luck, happy trails, and God bless!
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Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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10-31-2017, 11:45 AM
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#6
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,558
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Onan does not manufacture that pump. It is a very common fuel pump used in other applications.
It should be a small rectangular shape and like the other guys said, will be available at any NAPA store. I paid less than $20 for it.
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97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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10-31-2017, 12:01 PM
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#7
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Senior Member
Join Date: Jan 2013
Location: Muskoka Ontario Canada
Posts: 3,142
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Make sure it has power going to it as well. They wont work without power. I found mine had a broken ground wire on the pump. Easy fix.
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2000 coachmen santara 370 5.9 cummins isb
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10-31-2017, 01:44 PM
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#8
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Junior Member
Join Date: Feb 2017
Posts: 22
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Can you buy the fuel filter at Napa too?
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10-31-2017, 09:41 PM
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#9
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Community Administrator
Tiffin Owners Club
Join Date: Sep 2013
Location: DFW, Texas
Posts: 21,267
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If you can't find the pump at an auto parts store, get the model number off of it and do a search on Amazon. I bought an AirTex brand pump on Amazon for the Onan 5500 in our Itasca for about $40 with free shipping. AirTex makes the pumps for Onan.
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2017 Phaeton 40IH XSH Maroon Coral - Power Glide Chassis with IFS
Previous '15 Tiffin Allegro RED 38QRA and '06 Itasca Sunrise 35A
'16 Jeep JKU Wrangler Sahara or '08 Honda Goldwing
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11-01-2017, 06:49 AM
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#10
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Junior Member
Join Date: Feb 2017
Posts: 22
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I'm looking for a fuel filter too have a spare I have a 5500onan
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11-01-2017, 06:11 PM
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#11
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Senior Member
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 6,446
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Quote:
Originally Posted by mike78
I'm looking for a fuel filter too have a spare I have a 5500onan
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I took mine off and threw it away. I installed a nipple - 1/4" pipe thread which a 1/4" fuel line slips onto to replace the original filter and installed a fuel filter in line just ahead of the fuel pump in the inlet line from the fuel tank. Cost was less than $10. for everything including the filter which was around $3.00. Now the fuel pump is protected as well as the carb.
Onan wanted $30.00 for the original filter replacement.
Lynn
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2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
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11-01-2017, 07:07 PM
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#12
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Junior Member
Join Date: Feb 2017
Posts: 22
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Thank you I will have to do that
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11-02-2017, 04:04 AM
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#13
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Senior Member
Join Date: Jul 2015
Location: Watertown NY USA
Posts: 6,446
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The adapter I used is 1/8" Pipe thread, not 1/4" like I said in my previous post.
By the time I discovered my error in information the time to edit had expired.
Lynn
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2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.
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11-02-2017, 05:12 AM
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#14
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Senior Member
Thor Owners Club Mid Atlantic Campers Forest River Owners Club Ford Super Duty Owner
Join Date: Aug 2012
Location: Lynchburg, VA
Posts: 288
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Quote:
Originally Posted by mike78
I'm looking for a fuel filter too have a spare I have a 5500onan
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Amazon has your filter for $10 to $12.
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My greatest asset, family and friends! They are gifts from God!
Jim and Pam
2017 Thor Hurricane 34J
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