Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

have a new honda gx 390 will start and idle but will not run…

Customer Question
have a new honda gs...
have a new honda gs 390 will start and idle but will not run above the idle. checked spark plug gas carb. with no results can you help me this engine has elc start and runs a blower motor
Submitted: 8 years ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 58 minutes by:
6/27/2010
Technician: Curtis B., Technician replied 8 years ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 31,872
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified
Have you removed the float bowl on the carburetor to see if the float and needle valve are stuck?
Ask Your Own Small Engine Question
Customer reply replied 8 years ago
yes removed and checked main jet changed plug gasoline this motor has less than 20 hrs on it
Technician: Curtis B., Technician replied 8 years ago
Could something have gotten into the exhaust and plugged it up?
Ask Your Own Small Engine Question
Customer reply replied 8 years ago
doesnt seem to be the engine will start and idle but no acceration could a coil are some other elctrical device cause this
Technician: Curtis B., Technician replied 8 years ago
Does it run any different if you play with the choke? Does this engine have the electric fuel shutoff solenoid in the base of the carburetor? If so, it could be not opening and only letting in enough fuel to idle.
Ask Your Own Small Engine Question
Customer reply replied 8 years ago
only starts and runs with choke on not sure about fuel shutoff has manuel fuel shutoff
Technician: Curtis B., Technician replied 8 years ago
No electric solenoid in the carburetor?
Ask Your Own Small Engine Question
Customer reply replied 8 years ago

dont think so i will check

 

Technician: Curtis B., Technician replied 8 years ago
ok. I will check back and i will be here tomorrow.
Ask Your Own Small Engine Question
Customer reply replied 8 years ago
it doesnt heve an electric fuel selinoid shut-off
Technician: Curtis B., Technician replied 8 years ago
I assume that you have verified that the throttle plate in the carb is actually moving when you throttle up. If so, remove the exhaust and try it.
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 Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 31,872
31,872 Satisfied Customers
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert

Curtis B. 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

31,872 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 been trouble shooting my old sthil model 72 blower.
I have been trouble shooting my old sthil model 72 blower. The spark wire wore thru to the plug so I spliced in another wire so it can get to the plug. Getting spark to the plug. Can see it thru a spa… read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,927 satisfied customers
It like lacking power while cutting grass. then it smooth
It like lacking power while cutting grass . then it smooth out and run like suppose to and run great . I drain both tanks of gas and try to new gas ,but still run bad when I turn on mower part it has … read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,872 satisfied customers
Troy-Bilt 2410 Storm snow blower won't start. Machine is
Troy-Bilt 2410 Storm snow blower won't start. Machine is brand new, was never used. Given to me as a gift from an estate sale. Don't know how long the gas has been in the tank. Drained the tank of sta… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
I have a & S 11.5 I/C engine that quit running last week
I have a B& S 11.5 I/C engine that quit running last week suddenly. … read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,872 satisfied customers
Troy Bilt Back Pack Blower 4 Cycle. Model # ***** Starts
Troy Bilt Back Pack Blower 4 Cycle. Model # ***** Starts fine and ideas good. When throttle is applied it starts to rev then cuts off. Things I've done replaced carb has same discrepancy. New gas, spa… read more
Briggs-Fan
Briggs-Fan
1,278 satisfied customers
I have a cub cadet 2146 that will not start. it turns over
i have a cub cadet 2146 that will not start. it turns over good, fuel in carb, spark plug has spark, just will not run, sounds like a car that the timing chain broke..… read more
Briggs-Fan
Briggs-Fan
1,278 satisfied customers
briggs and Stratton snow blower, has spark, compression. cranks
briggs and Stratton snow blower, has spark, compression. cranks by pull cord and electric start. has gasoline. gas at carb. gas into carb by primer. will not start. prior to no start, ran o.k. than st… read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,872 satisfied customers
Hey P.K. Searching solution to my Honda GXH 50cc blower
Hey P.K. Searching solution to my Honda GXH 50cc blower motor. It is acting up, I can only get it to run with the choke on. It will idle with the choke off, but once I spool it up it dies. Drained the… read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,872 satisfied customers
I have a model 24788830 in snow blower it h as gas and fire
I have a model 24788830 in snow blower it h as gas and fire going to the cylender but will not not start at all.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
31,872 satisfied customers
I have a toro 724 snow thrower the blower was running ok and
i have a toro 724 snow thrower the blower was running ok and then i was done working and about to shut the motor off , and the motor stalled. the next day i couldn't get the motor fired up. the spark … read more
MowerDocMD
MowerDocMD
151 satisfied customers
My law mower does not start changed the spark plug put fresh
My law mower does not start changed the spark plug put fresh gas in it seemed that it was going to start bu then it did not I checked the compression in it was 30 and did not go down. What else can be… read more
mayhemmotor
mayhemmotor
mechanic
Vocational, Technical or Trade Scho
6 satisfied customers
My 1 year old snow blower wont start. Its electric and i know
My 1 year old snow blower wont start. Its electric and i know spark plug is good. Doesnt seem like primer is bringing gas over through line. Any suggestions?… read more
Jeremy R
Jeremy R
1,069 satisfied customers
Help! We have a Generac generator (Honda GX240) engine, and
Help! We have a Generac generator (Honda GX240) engine, and are trying to start it to make sure it works before Hurricane Irene hits. Can't start. Gas is full, so is oil. Any suggestions?… read more
Hank F.
Hank F.
Service Technician
High School or GED
5,365 satisfied customers
Honda gx 240 started running rough and backfiring. Eventually
Honda gx 240 started running rough and backfiring. Eventually got to a point where it wouldn't run at all. Checked and cleaned spark plug. Removed and cleaned out gas tank and filter and fuel line. Pu… read more
Jon K.
Jon K.
Small Engine Diagnostic Expert
Some College, military training,
2,995 satisfied customers
i have a tecumseh 6.0 hp on a ariens snowblower.i bought it
i have a tecumseh 6.0 hp on a ariens snowblower.i bought it from a guy and it was only once,it ran good (2 pulls and started) powered on trailer got home started powered off put in garage since thanks… read more
J.R.
J.R.
Vocational, Technical or Trade Scho
7,173 satisfied customers
Same blower (Homelite) - I ordered, received and installed
Same blower (Homelite) - I ordered, received and installed new carb per your suggestion. Engine fired right up and ran fine. Today I got serious about leaf blowing and used the blower for about an hou… read more
Rick
Rick
Factory Authorized Trainer
Vocational, Technical or Trade Scho
4,218 satisfied customers
I have a Honda gas generator GX 390 that will not run. It
I have a Honda gas generator GX 390 that will not run. It has not been used for 4 years and I put new gas in it to start it. It will run if i put gas in the air cleaner opening, but for only about 3 s… read more
RUSS
RUSS
SERVICE TECHNICIAN
Vocational, Technical or Trade Scho
1,723 satisfied customers
I have a Generac 5000W portable generator. Not used or started
I have a Generac 5000W portable generator. Not used or started for about 4 years. Will not start. Tried putting tiny amount of gas into top of cylinder, but no luck. Any suggestions?… read more
roger
roger
owner of small engine shop
Vocational, Technical or Trade Scho
350 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