RV

Have RV Questions? Ask an RV Mechanic Online.

Ask an Expert,
Get an Answer ASAP!

RV
This answer was rated:

If you bypass the fuel pump how does the carb draw,fuel from…

If you bypass the fuel...
If you bypass the fuel pump how does the carb
draw,fuel from a gas container?
Just elevate it?
Show More
Show Less
Ask Your Own RV Question
Answered in 2 minutes by:
1/14/2018
Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 12,529
Experience: RVDA/RVIA Master Certified Technician with many years experience.
Verified

Hi! My name is ***** ***** I can assist you with this. I may need some additional information from you first in order to give a complete answer.

Ask Your Own RV Question

Is this for a generator?

Ask Your Own RV Question
Customer reply replied 1 month ago
I wrote a partial narrative 8n that block. But this system wouldn't let me continue
Customer reply replied 1 month ago
I don't want to go more than $5 until I get an answer.
Customer reply replied 1 month ago
Can you access the partial narrative i wrote about the problem?
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.
Customer reply replied 1 month ago
its an onan 4000. Did you not get the rest of what I wrote?

Sorry for the delay.........I had to take a phone call. Yes, I got that this is an Onan 4000 unit. And yes, you can use a spare gas tank and line held near the set if you want to check to see if your line is either leaking air or the intake in the tank might be plugged.

Ask Your Own RV Question
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?

Only the part about the fuel pump and can you use a gas can.

Ask Your Own RV Question

If the fuel in the gas tank is below about 1/3 tank it may not be enough to run the set. They don't want you running out of as out in the boonies.

Ask Your Own RV Question
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.

Just tell me what the symptoms are........

Ask Your Own RV Question

This is what it shows for your question:

If you bypass the fuel pump how does the carb
draw,fuel from a gas container?

Just elevate it?

Ask Your Own RV Question
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.I have removed the fuel line and cranked the engine, the fuel flow looks good.

That is usually one of two things. Either the fuel filter is plugged up OR the fuel pump is failing. If you are replacing the pump you want to install a new filter anyway. Amazon has both. Not hard to change out.

Ask Your Own RV Question

I​t can run a long time before it quits on a bad pump.

Ask Your Own RV Question
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.I have removed the fuel line and cranked the engine, the fuel flow looks good.I have opened the float bowl drain, the first time it was drip....drip....drip.I have squirted about a can of carb cleaner , and some Gun Scrubber directly into the float bowl as,well as the air intake. That seemed to help some b7t the oroblem still persists. Aftwr the carb cleaner the float bowl emptied in a steady stream.

My experience is that a new fuel filter and pump usually solve this. Do you have the Onan Service Manual for this unit?

Ask Your Own RV Question
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.I have removed the fuel line and cranked the engine, the fuel flow looks good.I have opened the float bowl drain, the first time it was drip....drip....drip.I have squirted about a can of carb cleaner , and some Gun Scrubber directly into the float bowl as,well as the air intake. That seemed to help some b7t the oroblem still persists. Aftwr the carb cleaner the float bowl emptied in a steady stream.In November at high altitude the gen worked fine. The problem started in new jersey 8n md december.
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.I have removed the fuel line and cranked the engine, the fuel flow looks good.I have opened the float bowl drain, the first time it was drip....drip....drip.I have squirted about a can of carb cleaner , and some Gun Scrubber directly into the float bowl as,well as the air intake. That seemed to help some b7t the oroblem still persists. Aftwr the carb cleaner the float bowl emptied in a steady stream.In November at high altitude the gen worked fine. The problem started in new jersey 8n md december.Yes I got them on a pdf from cummins. That's how I was able to determine a fault 36

Fuel pumps can quit any time. I believe that this is the problem.

Ask Your Own RV Question
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.I have removed the fuel line and cranked the engine, the fuel flow looks good.I have opened the float bowl drain, the first time it was drip....drip....drip.I have squirted about a can of carb cleaner , and some Gun Scrubber directly into the float bowl as,well as the air intake. That seemed to help some b7t the oroblem still persists. Aftwr the carb cleaner the float bowl emptied in a steady stream.In November at high altitude the gen worked fine. The problem started in new jersey 8n md december.Yes I got them on a pdf from cummins. That's how I was able to determine a fault 36Ok, thanks, ***** ***** reolacing that or having it replaced. But 8n doesnt seem to me that it should fail with just under 200 hours, even if the motorhome (and generator) is about 10 years old.

Not surprising at all. I have had several in my shop fail with less than 100 hrs on them. AirTex makes a good replacement for less than $50.

Ask Your Own RV Question

And you are quite welcome! Please get back to me if you need more later as there is not any time limit on follow ups.

Ask Your Own RV Question
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.I have removed the fuel line and cranked the engine, the fuel flow looks good.I have opened the float bowl drain, the first time it was drip....drip....drip.I have squirted about a can of carb cleaner , and some Gun Scrubber directly into the float bowl as,well as the air intake. That seemed to help some b7t the oroblem still persists. Aftwr the carb cleaner the float bowl emptied in a steady stream.In November at high altitude the gen worked fine. The problem started in new jersey 8n md december.Yes I got them on a pdf from cummins. That's how I was able to determine a fault 36Ok, thanks, ***** ***** reolacing that or having it replaced. But 8n doesnt seem to me that it should fail with just under 200 hours, even if the motorhome (and generator) is about 10 years old.Do you figure that would be one of the problems with people NOT using the things?I've put about 50 hours on since I bought it early november.
Customer reply replied 1 month ago
its an Onan microquite 4000.Did you get the rest of my question and information? I wrote a partial narrative but the system wouldn't let me complete it.Did you get the rest of my narrative?Then why did I spend the time writing it............Shall I start over? I have tried to diagnose it myself.It will run for 2 minutes or somewhat longer, 10 -20 then stop. Once it ran for 2 hours then stopped. The flashing light shows fault code 36.Turning rhe altitude adjustment dial has no effect. I have changed the spark plug and air filter but bth looked good.I have removed the fuel line and cranked the engine, the fuel flow looks good.I have opened the float bowl drain, the first time it was drip....drip....drip.I have squirted about a can of carb cleaner , and some Gun Scrubber directly into the float bowl as,well as the air intake. That seemed to help some b7t the oroblem still persists. Aftwr the carb cleaner the float bowl emptied in a steady stream.In November at high altitude the gen worked fine. The problem started in new jersey 8n md december.Yes I got them on a pdf from cummins. That's how I was able to determine a fault 36Ok, thanks, ***** ***** reolacing that or having it replaced. But 8n doesnt seem to me that it should fail with just under 200 hours, even if the motorhome (and generator) is about 10 years old.Do you figure that would be one of the problems with people NOT using the things?I've put about 50 hours on since I bought it early november.Ok, will do.

Today's gas is very hard on fuel lines and fuel pump diaphragms. They age quickly.

Ask Your Own RV Question
Customer reply replied 1 month ago
I have bought a new pump and filter directly from Cummins.Due mainly to weather I haven't been able to install it yet. When I can get that done, i'll get back to you.In doing some further research I think that is,quite likely the problem. I do want to get it running as i want to use the motorhome. And spend some time in warmer climes. I could of course go w/o the generator, but it is convenient.Is it worthwhile to "dissect" the pump and find out what went wrong with it? What would one look for?

No. Sealed units and not worth messing with it.

Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 12,529
Experience: RVDA/RVIA Master Certified Technician with many years experience.
Verified
Randall and 87 other RV Specialists are ready to help you
Ask your own question now
Was this answer helpful?
Ask Randall Your Own Question
Randall
Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 12,529
12,529 Satisfied Customers
Experience: RVDA/RVIA Master Certified Technician with many years experience.

Randall is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV.

DutchUSA

Highly recommend this RV expert. Prompt, good and detailed answers were given. Very willing to help with genuine concern. I will ask for him next time.

JackUSA

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

< Previous | Next >

Meet the Experts:

gene

gene

RV Mechanic

1,100 satisfied customers

28 yrs exp in the industry

Nick

Nick

RVIA Certification

664 satisfied customers

5 years RV repair and reconstruction, Fleetwood RV Training course completion.

Steve F.

Steve F.

RVIA Certification

443 satisfied customers

Journeyman and Master RV technician, Mechanical & Aerospace Engineer. RVIA Technical Consultant

Robert

Robert

RV Mechanic

12,591 satisfied customers

18 yrs. RV experience including Cummins North West, Country Coach, Monaco Coach - vendor certified.

Randall

Randall

RVIA Certification

12,529 satisfied customers

RVDA/RVIA Master Certified Technician with many years experience.

Wayne

Wayne

RV Mechanic

874 satisfied customers

Work on several type of Rv engine, Trans, brakes

Chris (aka-Moose)

Chris (aka-Moose)

RV Mechanic

456 satisfied customers

16 years of experience

< Previous | Next >

Related RV Questions
My new cs adventurous 2017 with800 watts of solar power has
My new cs adventurous 2017 with800 watts of solar power has shut down on power completely. … read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
Thor ace rv has airxcel 48000 series air conditioner that is
thor ace rv has airxcel 48000 series air conditioner that is leaking inside the coach … read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
It has been raining here for days. Thus morning we noticed
It has been raining here for days. Thus morning we noticed some if the dash lights on. So Tom turned the engine on just to make sure it would work. It started right up, but now the engine won't turn o… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
1999 Ford Jamboree 21ft RV needs some roof work. Just
1999 Ford Jamboree 21ft RV needs some roof work. Just purchased used. Prior owner repaired leaks above cabover bunk and it's watertight but leaves a bit to be desired cosmetically from interior at lea… read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
A plastic milk bottle cap fell into the bowl and went way
a plastic milk bottle cap fell into the bowl and went way down in. The macerator has ceased working and the bowl has filled up with water. It will not flush. This is in a motorhome rear bathroom … read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
I have a 08 6.7 ISB in a Spartan pusher that won't build
Hi, I have a 08 6.7 ISB in a Spartan pusher that won't build heat to regen. I'm stuck at a dealership for a week changing everything with no success. How does your help line work ?… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
0 satisfied customers
City water has been working fine for weeks.. Now, nothing
City water has been working fine for weeks.. Now, nothing works.. water pump worked for about 3 minutes and then no water also.. … read more
Chris (aka-Moose)
Chris (aka-Moose)
RV Mechanic
Vocational, Technical or Trade School
456 satisfied customers
I bought a brand new 2018 keystone bullet 2 weeks ago
Hi I bought a brand new 2018 keystone bullet 2 weeks ago everything working well until today the hot water heater gas pilot is out and only runnng on electric. Need help getting the pilot back on and … read more
Robert
Robert
RV Mechanic
Vocational, Technical or Trade Scho
12,591 satisfied customers
What does the communication cable hook to. One end to the
What does the communication cable hook to. One end to the controller and the other where. This is in an RV with A/C, heat pump, furnace and fan.… read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
What framing and floor deck materials are used in the
What framing and floor deck materials are used in the Wildwood fsx 187 RB travel trailers … read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
The interior fascia on my slide got damaged I retracted the
The interior fascia on my slide got damaged I retracted the slide but there was a lawn chair on the couch that it slides past and gouged the wood fascia. totaly cosmetic, but must be fixed My question… read more
Robert
Robert
RV Mechanic
Vocational, Technical or Trade Scho
12,591 satisfied customers
Dometic fridge RM77855L wont start on gas. No clicking noise
dometic fridge RM77855L wont start on gas. No clicking noise for igniter. Plenty of gas in bottle. … read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
Would like to put a receiver hitch on my 2007 Keystone
Would like to put a receiver hitch on my 2007 Keystone Everest 5th wheel. Can this be done? … read more
Mechanic01
Mechanic01
2,032 satisfied customers
Furnace not working. 2003 southwind 32V. Southwind. I
Furnace not working. JA: What's the make/model/year of your RV? Customer: 2003 southwind 32V JA: What is the model of your '03 RV? Customer: southwind JA: Are you fixing your RV yourself? What have yo… read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
Recently bought a Rexhall Roseaire and need info on proper
recently bought a Rexhall Roseaire and need info on proper coolant,anti-freeze, and oil for the Rose. my name is***** Co. … read more
Robert
Robert
RV Mechanic
Vocational, Technical or Trade Scho
12,591 satisfied customers
Our 2008 Gulf Stream Yellowstone's full slide will not
Our 2008 Gulf Stream Yellowstone's full slide will not retract. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
My Roadtrek RS 22 Adventurous ( Mercedes Sprinter 2005 )
Hi Robert; My Roadtrek RS 22 Adventurous ( Mercedes Sprinter 2005 ) check engine light just came on and is staying on steady. Advanced Auto OBD test says Fresh air intake sensor needs replacing. Is th… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Magnetek 6712 modle converter went out replacing with
magnetek 6712 modle converter went out replacing with wfco8900 series they sent me a 55 amp eill that work for me? … read more
Randall
Randall
RVIA Certification
12,529 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x