How JustAnswer Works:

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

Ask RUSS Your Own Question

RUSS
RUSS, SERVICE TECHNICIAN
Category: Small Engine
Satisfied Customers: 3666
Experience:  28 YEAR SERVICE TECHNICIAN
19031375
Type Your Small Engine Question Here...
RUSS is online now
A new question is answered every 9 seconds

I have a Cub Cadet Lawn Tractor Model 2140 with an Onan Elite

Resolved Question:

I have a Cub Cadet Lawn Tractor Model 2140 with an Onan Elite E140-H engine. Starting having problems that engine would start and run fine for few minutes, and then start missing, losing speed while moving, and die. If cut mowing deck off, would eventually catch back up to speed only to start same sequence again 30-60 seconds later. Would do this same cut out both when mowing deck was engaged and not engaged. Seems to run okay on low speed, but dies out at higher speed and under load.

Replaced spark plug and gas filter. Still experience same problem. Could this be a fuel pump problem or something else??
Submitted: 2 years ago.
Category: Small Engine
Expert:  RUSS replied 2 years ago.

RUSS :

Hi, this is Russ,! I will give you the benefit of 28 years experience and teaching. You have a fuel supply problem and I would certainly rebuild or replace the fuel pump. I am confident that is the problem as long as you replaced the fuel filter. THANKS

RUSS :

BY THE WYA, THAT IS A GREAT ENGINE! GOD BLESS

RUSS :

sorry for typo's


 

RUSS :

One other thing, make sure the hole in the gas cap is open...if not it can produce the same symptoms!

Customer:

Russ,


 


I was guessing I had a fuel supply problem, but if I have a fuel pump problem, doesn't the pump normally fail and not pump normally under load for 4-5 minutes and then start this cut off, loss power sequence.

RUSS :

Not necessarily, beiung a vacuum operated diaphragm pump, it can do this, but please take a look at the gas cap vent first....I enlarged the hole in my own and it worked great after that!

RUSS :

sorry typing skills stink!


 

RUSS :

I am going to leave very shortly, is there anything further I can do?

Customer:

Will check the gas cap venting -- creating a vacuum in gas tank would cause similiar problem as a dirty fuel filter I think. Air filter is reasonably clean -- if filter were dirty, would it cause the problem I am see because of the air fuel mixture problem at higher speeds. Trying to rule out other possible problems before replacing pump.

RUSS :

correct good luck !

Customer:

Russ,


 


By way of trouble shooting this problem, here is what I think the best approach is to rule out possible associated problems before replacing the fuel pump based on your comments:


 


1. Replace fuel filter -- already done.


2. Make sure vent gas cap is open -


3. Air filter -- could be causal problem if dirty


4. If 1, 2, and 3 are okay, then fuel pump has to be faulty ???


 


Is this what you think is the right way to fix??

RUSS :

Sorry, just had to fchange computers.....if iar filter is dirty, it runs rich and would blow black smoke....but not act like you describe...

RUSS :

if one and two are ok, i STRONGLY suggest rebuild the pump!

Customer:

So air filter really would not cause this problem. The gas cap venting is the only other potential causal problem since fuel filter has been replaced. If vent is clean, then pump must be faulty is botXXXXX XXXXXne - correct.

RUSS :

YES, please remember I do not have my ears and hands on this, so this is what I STRONGLY THINK IS THE PROBLEM, 100% SURENO 90% SURE, YES

Customer:

Thanks - makes sense

RUSS :

THANK YOU AND GOD BLESS!

RUSS, SERVICE TECHNICIAN
Category: Small Engine
Satisfied Customers: 3666
Experience: 28 YEAR SERVICE TECHNICIAN
RUSS and other Small Engine Specialists are ready to help you

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:

 
 
 
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
< Last | Next >
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Curtis B.

    Technician

    Satisfied Customers:

    6989
    have worked on and around most engine models for 35 yrs./Polaris ATV expert
< Last | Next >
  • http://ww2.justanswer.com/uploads/KO/koboma/2012-6-6_20917_DSCF1022.64x64.JPG Curtis B.'s Avatar

    Curtis B.

    Technician

    Satisfied Customers:

    6989
    have worked on and around most engine models for 35 yrs./Polaris ATV expert
  • http://ww2.justanswer.com/uploads/SM/SmEngPro/2012-8-5_3564_Rick1206290005Edit.fullres.logo.scrn.64x64.jpg Rick's Avatar

    Rick

    Factory Authorized Trainer

    Satisfied Customers:

    4126
    Outdoor Power Equipment technical trainer since 1990, covering eight states.
  • http://ww2.justanswer.com/uploads/GI/giftindex/2011-11-19_2715_JamesLWells500.64x64.jpg James W's Avatar

    James W

    Small Engine Troubleshooting Expert

    Satisfied Customers:

    2978
    7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years
  • http://ww2.justanswer.com/uploads/jonrk/2010-1-5_22551_jon.jpg Jon K.'s Avatar

    Jon K.

    Small Engine Diagnostic Expert

    Satisfied Customers:

    2950
    Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines
  • http://ww2.justanswer.com/uploads/MR/mr2cycle/2011-3-12_03458_sears.64x64.jpg Vince O.'s Avatar

    Vince O.

    Small Engine Technician

    Satisfied Customers:

    2374
    Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers
  • http://ww2.justanswer.com/uploads/rheisnger/2010-12-31_010856_41385_100001225699183_7012_q.jpg RUSS's Avatar

    RUSS

    SERVICE TECHNICIAN

    Satisfied Customers:

    1723
    28 YEAR SERVICE TECHNICIAN
  • http://ww2.justanswer.com/uploads/BriggsEngines/2010-02-26_230200_n1834842973_4823.jpg CJBennett's Avatar

    CJBennett

    Small Engine Technician

    Satisfied Customers:

    623
    Briggs and Stratton Master Service Tech, Kohler, Tecumseh, Kawasaki certified. 18 years exp.