Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

I have a 30 year old Sunstar with hydo drive and was using…

Customer Question
Second opinion] I have a...
Second opinion] I have a 30 year old Sunstar with hydo drive and was using the show blower. Engine runs smooth until I move lever to right to move forward or back then it starts running rough and sometimes will backfire. problem goes away after a few minutes but returns again & againJA: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?Customer: yes, full of new gas, ran perfect a couple days ago when blowing show. it's never done this beforeJA: Do you plan on doing the work yourself?Customer: i hope toJA: Anything else we should know to help you best?Customer: Only that I bought my Sunstar new and have used it year around for 30 years.
Submitted: 7 months ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 1 day by:
1/4/2018
Technician: JohnF2015, Technician replied 7 months ago
JohnF2015
JohnF2015, Technician
Category: Small Engine
Satisfied Customers: 1,262
Experience: Owner/Service Technician at S & J Small Engines
Verified

Hi, my name is***** will be assisting you.

This sounds to me like you have a small obstruction in the main fuel jet in the carburetor that is causing the engine to not get enough fuel when under a load which will cause the engine to backfire on occasion as well as surge and not maintain a steady rpm when running. It can come and go as the load is removed and reapplied to the engine depending on how quickly the obstruction is sucked back up into the main fuel jet. It sounds like you need to remove the carburetor and give it a good thorough cleaning in order to remove and trash or debri that may be inside that is getting into the main fuel jets.

Thank you for choosing to use our services.

Please take a moment to rate your experience using the star rating system that is provided for you.

Ask Your Own Small Engine Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask JohnF2015 Your Own Question
JohnF2015
JohnF2015
JohnF2015, Technician
Category: Small Engine
Satisfied Customers: 1,262
1,262 Satisfied Customers
Experience: Owner/Service Technician at S & J Small Engines

JohnF2015 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:

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.

JimmyBagley, 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!!!!

AlexLos 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.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, 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.

EstherWoodstock, 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.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Curtis B.

Curtis B.

Technician

15,517 satisfied customers

have worked on and around most engine models for 35 yrs./Polaris ATV expert

Rick

Rick

Factory Authorized Trainer

4,218 satisfied customers

Outdoor Power Equipment technical trainer since 1990, covering eight states.

Jon K.

Jon K.

Small Engine Diagnostic Expert

2,995 satisfied customers

Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines

James W

James W

Small Engine Troubleshooting Expert

2,986 satisfied customers

7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years

Vince O.

Vince O.

Small Engine Technician

2,927 satisfied customers

Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers

Wayne

Wayne

Engine Rebuilder

2,041 satisfied customers

many years on egine rebuilding, lawn mower,roto tiller,Truck,and small engines

RUSS

RUSS

SERVICE TECHNICIAN

1,723 satisfied customers

28 YEAR SERVICE TECHNICIAN

< Previous | Next >

Related Small Engine Questions
I have a 2005 yamaha G22a golf cart that will only run
I have a 2005 yamaha G22a golf cart that will only run smooth at full throttle. Anything less and it runs rough and back fires. Rebuilt engine and new carb … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have a riding lawnmower with a 14hp Briggs Intek engine
Second opinion] I have a riding lawnmower with a 14hp Briggs Intek engine which runs great until I engage the mower deck. When I do, the engine backfires and dies. … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have a Cub Cadet model 3206 that will not go in reverse.
I have a Cub Cadet model 3206 that will not go in reverse. Forward works okay … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
Husgvarna zero turn 26 hp Koehler engine, ran and started
Husgvarna zero turn 26 hp Koehler engine , ran and started fine last year , will crank and run as long as you hold key to start position , dies when key let go to run , new fuel pump and anti backfire… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
Snow blower operates fine for 20 -30 minutes then starts to
Hi, snow blower operates fine for 20 -30 minutes then starts to lose power. New carb this fall. Oil level is correct. New fuel. … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,877 satisfied customers
I have a 30 year old Sunstar with hydo drive and was using
I have a 30 year old Sunstar with hydo drive and was using the show blower. Engine runs smooth until I move lever to right to move forward or back then it starts running rough and sometimes will backf… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
It statred every dy ubtil it ran & backfired & now ill not
it statred every dy ubtil it ran & backfired & now ill not start? … read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,927 satisfied customers
Have an older sears craftsman snow blower that is running
have an older sears craftsman snow blower that is running hot. started by checking carb screw, cleaning carb and spark plugs etc. now up to timing. would that be a timing advance or delay? Can't remem… read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
2,041 satisfied customers
The engine runs rough like its starving for fuel even after
the engine runs rough like its starving for fuel even after I replaced the carb with a new one. I can pull the choke full on and it will run somewhat better but not smooth as it should. Both cyl. are … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
Second opinion] i have an onan 6.5 in a motorhome and it has
Second opinion] i have an onan 6.5 in a motorhome and it has an issue with the idle going from steady to vrrm vrrm vrrm it doesn't seem to correct itself but if i turn it off wait 10 minutes and start… read more
Hank F.
Hank F.
Service Technician
High School or GED
5,365 satisfied customers
I have a craftsman mower 17.5 HP Intek engine model 31G777
I have a craftsman mower 17.5 HP Intek engine model 31G777 type 0806 E 1 code 07073. Started running rough all of a sudden. It cranks fine and idles perfect but wg … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have onan 5500 generator in 5th wheel camper, shuts off
I have onan 5500 generator in 5th wheel camper, shuts off after 20 minutes, restartes after it cools down … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,365 satisfied customers
Second opinion] my toro328d will start run for a minute then
Second opinion] my toro328d will start run for a minute then die but it easily starts right up again then dies again… read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,877 satisfied customers
Deere 425 will not go in reverse. Been getting slower over
Hi - John Deere 425 will not go in reverse. Been getting slower over the last year but now won't work at all and we have 10" of snow coming tomorrow! … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have a john Deere 115 the engine floods now after I start
I have a john Deere 115 the engine floods now after I start it. If I unhook the gas line it starts and runs smooth. I took the carb apart and it looked perfect, cleaned it with carb cleaner the float … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have Ariens Sierra 1540H, it will barely move forward, but
I have Ariens Sierra 1540H, it will barely move forward, but seems to move fine in reverse. I suctioned out old trans. fluid and replaced with new. I then purged and mower moved ok in both directions,… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have a Snapper 1855 with an Onan B48M-GA018 engine. Last
I have a Snapper 1855 with an Onan B48M-GA018 engine. Last year it started to run rough, but would smooth out and run normally with the choke closed to partially closed. I removed the fuel line after … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have a Simplicity Sunstar Garden Tractor with less than 600
I have a Simplicity Sunstar Garden Tractor with less than 600 hours on the hour meter. Mower ID is:(###) ###-####001344. Engine is a Kohler 20 HP M20S Spec Number: 49506 Serial Number ********** While… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 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