Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

Small Engine

Rick. I have a 13 HP BS with OHV Industrial/commercial

Customer Question
Hi Rick. I have a...
Hi Rick. I have a 13 HP BS with OHV Industrial/commercial engine powering a towed Swisher mower. When I left it with my neighbor to use it was working fine, smoking just a little and using/ burning about a 1/2 qt per tank. Just got it back and it's blowing oil and gas (I think gas in it) out the exhaust. Compression when I bought it used was at 138 and holding. Thoughts?
Submitted: 1 year ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 4 minutes by:
8/15/2016
Technician: JON, Small Engine Technician replied 1 year ago
JON
JON, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1,508
Experience: Certified Small Engine Technician
Verified

Check the oil. Does it smell like fuel. It sounds like you have a leaking/blown head gasket or the carb is allowing fuel to leak into cylinder due to faulty needle valve in carb. Do you have oil on the machine anywhere in the front. What is the compression currently?

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Oil smells like fuel. I didn't have oil on deck until now. Now it's pouring out of exhausted when trying to start. Almost starts then dies. Compression now only 128 after 130 at 3 minutes ago.
Customer reply replied 1 year ago
Piston seems to be dead heading.
Technician: JON, Small Engine Technician replied 1 year ago

Fuel has bypassed the needle in the carb and went into the crankcase. You will need to do an oil change and also clean carb and a rebuild would be best just incase the needle is bad instead of just stuck. possibly need a new spark plug also. Fuel/Oil leaking from exhaust due the viscosity is much thinner now since there is fuel present in the oil. Can cause major damage if ran too long as your oil is now thinned very much

Ask Your Own Small Engine Question
Technician: JON, Small Engine Technician replied 1 year ago

how is the oil level reading? Does it look thinner than normal?

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I THOUGHT it looked like oil level climbed. Neighbor had left fuel valve open when he parked it. Yes, looks thinner than normal. And I tried lighting the dipstick ( yes, well away from the gas engine,) and it lit right away burned off the gas and left oil on the stick.
Customer reply replied 1 year ago
it sounds like from what you're saying and what I was seeing i.e. a clean mower deck and no oil on it until now, that I should only need to rebuild the carburetor and do an oil change. How does the fuel get into the crank case? An open valve?
Technician: JON, Small Engine Technician replied 1 year ago

That is the problem then. Its not a hard repair, more aggravating than anything. Fuel shut valve is a great idea when used anyways huh? Change oil and you could be fine with only doing this as needle seats itself at times, but its a risk to gamble on. I would pull carb and go ahead do the cleaning and rebuild as those carb kits are not too much and you will not have to deal with this issue again

Ask Your Own Small Engine Question
Technician: JON, Small Engine Technician replied 1 year ago

Fuel is thin and seeps. Needle doesn't seal the carb off, so fuel keeps flowing, it seeps into the cylinder, and then down into the crankcase through the piston. You don't have the compression you used to because the viscosity of the oil is thinner due to the gas. once the crankcase is full, the fuel/oil mix just wants out so it goes to the muffler next to escape

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
That is a relief. What about the compression numbers? I'm almost positive it's dropped 10 psi from when I first bought this a couple months ago and checked the compression then. From 138 to 128 But my memory could be faulty and it was at 128 months ago. Right now it is still at 122 and it's been 10 minutes since I cranked it at 130.
Technician: JON, Small Engine Technician replied 1 year ago

the rings are just sliding in the cylinder and there is nothing to slow piston down since the oil is so thin currently. Hopefully there is no damage to the piston/cylinder. It is possible, but most of the time no damage is done. Really depends on how long machine has been ran like this

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
OK, I see that you just answered my compression question. Thank you for the help. I am greatly relieved. Have a blessed evening.
Technician: JON, Small Engine Technician replied 1 year ago

You too.

Let me know if I can assist you further. Please remember to RATE me as I strive to do my best and your ratings help me to achieve this

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
It wasn't run very long. It has been parked for two weeks with the fuel valve open. But I never got the engine to actually run and keep running it other than five seconds spurts after I cleaned the spark plug and blew out the cylinder . After this, I will have to reminds the neighbor to shut the fuel valve off after he's done mowing. We went in half-and-half to purchase this used mower.
Technician: JON, Small Engine Technician replied 1 year ago

You should be fine then. Was it parked in a hot area. Fuel pressure from heat can cause the needle to leak as when the fuel system gets too much pressure build up, it leaks. You should be fine and be back to operations in no time

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Thanks again. I will rate you high. This is much better than my first experience with just answer when that tech was only interested in the rating and his money and not in solving a problem.
Technician: JON, Small Engine Technician replied 1 year ago

I am here for you. I leave questions open 5 days after ratings, so if you need me still afterwards for anything, just return to this question, and ask. I am usually around my computer and will answer back with-in 1-90 minutes

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Just rated you five stars but I'm not sure anything happened. the screen just kind of stopped would you know it immediately if the rating comes through?
Technician: JON, Small Engine Technician replied 1 year ago

It doesn't show currently. Normally it shows on the screen of the question on my side. I think once you accept answer and rate it shows. Not sure how it works on your side

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Had to run card through again. Don't know why. Rating again.
Technician: JON, Small Engine Technician replied 1 year ago

Not a problem. Remember, I will be here for further help if needed.

Ask Your Own Small Engine Question
Ask JON Your Own Question
JON
JON
JON, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1,508
1,508 Satisfied Customers
Experience: Certified Small Engine Technician

JON 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

14,377 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

2,858 satisfied customers

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

RUSS

RUSS

SERVICE TECHNICIAN

1,723 satisfied customers

28 YEAR SERVICE TECHNICIAN

Wayne

Wayne

Engine Rebuilder

1,607 satisfied customers

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

< Previous | Next >

Related Small Engine Questions
MY Troy Bilt is 8 HP 24" My neighbor used it and put it in
My neighbor used it and put it in my garage. When I attempted to use it, it was "locked" in a forward gear and the ignition was on. I forced it into first gear, used starting fluid and press the ruber choke 8 times. The gear shift is difficult to move. I can not get it to start or do anything I am used to doing. Your help will be aoppreciated … read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,377 satisfied customers
What is the valve specs for my 18HP OHV INTEK Plus engine.
What is the valve specs for my 18HP OHV INTEK Plus engine … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
My 40 kva generac generator does not transfer to backup
my 40 kva generac generator does not transfer to backup power when … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
How do i hook up clutch cable to the auger to make it go.
how do i hook up clutch cable to the auger to make it go … read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,858 satisfied customers
Where can I get maintenence on my RV Onon generator in or
Where can I get maintenence on my RV Onon generator in or around Palm Springs … read more
don
don
fleet superintendent
Vocational, Technical or Trade Scho
12 satisfied customers
My snow blower won't start. I dow
my snow blower won't start JA: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean? Customer: yes I dow JA: Do you plan on doing the work yourself? Customer: yes JA: Any… read more
JON
JON
Small Engine Technician
1,508 satisfied customers
I have a mastercraft snowblower with atecumseh engine. 1986.
I have a mastercraft snowblower with atecumseh engine … read more
Donald
Donald
Owner / Technician
High School
2,229 satisfied customers
Curtis, The Ariens 1024 Pro runs like a champ, and starts
Curtis, The Ariens 1024 Pro runs like a champ, and starts like before, with the new plug.. I had to replace the "gripping" washer that holds the pinion that drives the bevel gear that rotates the chut… read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,377 satisfied customers
I can't get my generator to start. I changed the plug. I did
I can't get my generator to start. I changed the plug. I did get it to start once and it ran rough with blackish smoke for about 10-15 seconds and then it died. … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
I have a Honda EU6500is A generator and the choke closes
I have a Honda EU6500is A generator and the choke closes completely after starting after 4 or 5 seconds and shuts the motor off. I checked the choke solenoid motor and it is perfectly within specs. th… read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
Cant start my ariens snow blower. I have used seafoam and it
cant start my ariens snow blower JA: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean? Customer: yes JA: Do you plan on doing the work yourself? Customer: yes JA: Any… read more
JON
JON
Small Engine Technician
1,508 satisfied customers
I have a 13kw generac that I have had for 15 years. Today we
I have a 13kw generac that I have had for 15 years. Today we lost power and the generator started as it was supposed to but never switched over to the power panel. I went outside and the system set li… read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
Is there a way to buy/replace engine on Generac generator
Is there a way to buy/replace engine on Generac generator ruined during Huricane? … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
I bought a very lightly used 208 cc 26 inch craftsman snow
I bought a very lightly used 208 cc 26 inch craftsman snow blower from previous home owner , whose house I bought. … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
I would like to know the connecting rod torque specs for
Hello I would like to know the connecting rod torque specs for perkins 350E … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
SNOW BLOWER WILL NOT START. iT WILL START WITH START FLUID.
SNOW BLOWER WILL NOT START. iT WILL START WITH START FLUID. BUT THATS IT. IT HAS SPARK, I HAVE PULLED THE CARB AND CLEAN AND REINSTALL. STILL WILL NOT START. IT IS A TWO STAGE BLOWER.MODEL 921027.IT I… read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,377 satisfied customers
I need to replace a kohler 25hp horizontal engine. it is
I need to replace a kohler 25hp horizontal engine. it is model CH25s with … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
Unable to program homelink for garage opener remote.I
unable to program homelink for garage opener remote.I perform step 1 Hold channel 1 & channel 3 button until the light flashes rapidly, release buttons, then "at the same time" I press Channel 1 and t… read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
1,046 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