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 James W Your Own Question

James W
James W, Small Engine Troubleshooting Expert
Category: Small Engine
Satisfied Customers: 3700
Experience:  7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years
18589515
Type Your Small Engine Question Here...
James W is online now
A new question is answered every 9 seconds

I have a Troy Bilt 6.5 hp self propelled mower. If I let it

Customer Question

I have a Troy Bilt 6.5 hp self propelled mower. If I let it set in the sun it starts first pull. If I pull it out of my shed (I live in Florida) it is very hard to start, sometimes just won't start. If it does, I can shut it off and one pull starts it again as long as it's warm.
Submitted: 5 years ago.
Category: Small Engine
Expert:  James W replied 5 years ago.
<p>OK, I love this question...</p><p> </p><p>1st, if the spark plug is not new, replace it with the proper gap setting.. </p><p> </p><p>We want to give the engine every edge possible to start when cold..</p><p> </p><p>I fully believe you are looking at a Fuel delivery problem..</p><p> </p><p>Warming up the engine makes it easier for the spark plug to work because the fuel is warmer and is closer to being in a vapor state..</p><p> </p><p>Also, all the parts that the fule touches are warmer moving it even closer to the cumbsution point.</p><p> </p><p>The spark does not have to very HOT to ignite warm fuel..</p><p> </p><p>Take this to the extreme.. If you leave an old car in the Snow, then try to start it, it is very hard to start, when it warms up it is much easier.. </p><p> </p><p>Oh WAIT.. You live in Florida, what do you know about snow..</p><p> </p><p>ANyway, the above also has to do witht he OIL warming up to and making the piston rings seat better, and the cylinder seat better.</p><p> </p><p>SO.. It is Possible you have Low compression caused by bad rings, worn bore, mist adjusted valves or ones that do not seat properly..</p><p> </p><p>You can test the compression if you have a tester gauge..</p><p> </p><p>BUT, most likely I think it to be a carburetor problem where the carb is not perfectly working.</p><p> </p><p>Some of the tiny holes may be plugged. When the heat makes the expand, the gas floes better.</p><p> </p><p>Also you may have OLD Gas...</p><p> </p><p>There are more detaisl to follow.</p><p> </p>
James W, Small Engine Troubleshooting Expert
Category: Small Engine
Satisfied Customers: 3700
Experience: 7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years
James W and 2 other Small Engine Specialists are ready to help you
Expert:  James W replied 5 years ago.

OK, I love this question...

 

1st, if the spark plug is not new, replace it with the proper gap setting..

 

We want to give the engine every edge possible to start when cold..

 

I fully believe you are looking at a Fuel delivery problem..

 

Warming up the engine makes it easier for the spark plug to work because the fuel is warmer and is closer to being in a vapor state..

 

Also, all the parts that the fule touches are warmer moving it even closer to the cumbsution point.

 

The spark does not have to very HOT to ignite warm fuel..

 

Take this to the extreme.. If you leave an old car in the Snow, then try to start it, it is very hard to start, when it warms up it is much easier..

 

Oh WAIT.. You live in Florida, what do you know about snow..

 

ANyway, the above also has to do witht he OIL warming up to and making the piston rings seat better, and the cylinder seat better.

 

SO.. It is Possible you have Low compression caused by bad rings, worn bore, mist adjusted valves or ones that do not seat properly..

 

You can test the compression if you have a tester gauge..

 

BUT, most likely I think it to be a carburetor problem where the carb is not perfectly working.

 

Some of the tiny holes may be plugged. When the heat makes the expand, the gas floes better.

 

Also you may have OLD Gas...

 

There are more detaisl to follow.

Expert:  James W replied 5 years ago.
As they sit, fuel that is left in the carburetor can turn to gum and varnish and cause this and other problems.

Also, any gasoline that was left in a gas can for a period of more than 30 days must be discarded because it also has begun to turn to varnish.

More than 70% of all of our repairs in our lawn mower business are due to this same issue. You most likely have dirt, gum, varnish...etc in your carburetor plugging up the small passageways and jets in the carb. It Must be removed from the engine, cleaned very well, blown out with compressed air and reassembled using a NEW carburetor rebuild kit. ALWAYS clean the fuel tank and replace the fuel line when doing this repair or you may have to do it all over again. The inside of the fuel line disintegrates over time and these small pieces of rubber will plug up the carb too. Dirt and water from a dirty fuel tank will also plug up the carb. Find the Model, type and serial or code numbers off of the engine and take them to your local dealer to get the carb kit.




First make sure that you have the correct complete carburetor repair kit.



Now take special care when you take the carburetor apart..to make sure that you watch and remember exactly how the gaskets come off.



Remove the float pin ...it just pushes out...and remove the float..carefully.. so you can see how the float needle is attached...(Some of them have a small wire spring holding it to the float....you will have to reinstall this spring when you reassemble the carburetor.



Next...remove the float valve seat. most of these have a screwdriver slot to allow removal. Look around the carburetor and see if it has a small idle adjustment needle...remove this needle if it has one. You are now done disassembling the carb. DO not take anything else out of the carb.



Get a good carburetor cleaner....preferably with a small hose you can attach to the nozzle of the can. Spray the carb cleaner all over the outside of the carburetor. this will loosen the dirt on the outside while you clean the inside. Now spray the cleaner through every hole, and nook and cranny you can fine on the inside of the carb.



When you are finished with the spray,blow all of the passageway clean with compressed air from an air compressor. Also blow all of the dirt from the outside of the carburetor.



Next. Take the entire carburetor to the kitchen sink......Ok maybe it would be better to get a big bowl...so you don't make your wife mad....and wash the entire carburetor with HOT SOAPY dishwater. This is to make sure that all of the carburetor cleaner is completely washed from the carb...(If it is not, you will deform the new gaskets and such that you install...even if it is dry.) Now rinse in clear watter and then blow the carb dry with the compressed air again.



Reassemble the carb using the identical parts out of the carb kit as you took out. install the float seat, then install the float needle and the float in the same position that you took them out. Check the float level after it is installed. Making sure that when the carb is upside down with the float in the up position, the float should be nearly level with the body of the carburetor. Now reinstall the bowl gaskets the same as you took them off. Then install the bowl nut with the small gasket under it. Reinstall the small idle needle if it had one.



There you are done.

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.