Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

I have a koehler command pro 23 hp that is building pressure…

Customer Question
i have a koehler command...
i have a koehler command pro 23 hp that is building pressure and blowing out rear seal what could be causing this
Submitted: 3 years ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 8 hours by:
6/29/2015
Technician: Curtis B., Technician replied 3 years ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 15,342
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified
Welcome to JUST ANSWER small engines, let me try to help you !! Is the engine vent pipe open that goes to the air cleaner air intake? If vent is plugged, crankcase pressure is not relieved, and pressure will build! Or worn rings or damaged piston can cause excessive pressure in the crankcase. What is the model umber of the engine? CH, SC,CV, SV, ???
Ask Your Own Small Engine Question
Customer reply replied 3 years ago
Ps-76550-bs is model number on ex mark zero turn I believe engine should be ch730-3225
Technician: Curtis B., Technician replied 3 years ago
http://www.kohlerengines.com/onlinecatalog/pdf/sm_24_690_06.pdf
Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 3 years ago
Breather is up top, under the air cleaner cover.
Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 3 years ago
Is it open?
Ask Your Own Small Engine Question
Customer reply replied 3 years ago
Yes it is open
Technician: Curtis B., Technician replied 3 years ago
So engine is worn!
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: 15,342
15,342 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

15,342 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
My riding Sears mower with Koehler motor puts out what looks
My riding Sears mower with Koehler motor puts out what looks and smells more like water than oil … read more
John Oliver
John Oliver
none
83 satisfied customers
I have a tiger cat stc61v-27cv-ss e9200031. Koehler command
I have a scag tiger cat stc61v-27cv-ss e9200031. Koehler command pro 27 hp. It is blowing the fuse in the red wired fuse holder as soon as I turn the key to on. It would not crank engine over after it… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a turf tiger with a 27 hp koehler command pro. It has
I have a scag turf tiger with a 27 hp koehler command pro. It has had the carb and coil packs replace fuel filter and spark plugs It doesn't seem to have a oil pressure sensor that I can find anyway. … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,872 satisfied customers
Koehler, 14 hp command pro series. Just replaced the fuel
Koehler, 14 hp command pro series. Just replaced the fuel pump, fuel filter, spark plug. Still won't start. Do I need prime it? If so, how can I do that when there isn't a pump bulb. Thanks. Jim… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a v twin 26 hp Koehler engine in a craftsman lawn
I have a v twin 26 hp Koehler engine in a craftsman lawn tractor. It's about 4 years old. Does this engine have a compression release? I am having trouble getting it past the first revolution even wit… read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,872 satisfied customers
A nephew tried jumping an allies chambers tractor with the
A nephew tried jumping an allies chambers tractor with the John Deere riding mower Koehler 23 hp. Engine. It hasn't started since. What are some things I can look at that may have been harmed.… read more
Briggs-Fan
Briggs-Fan
1,278 satisfied customers
I have a tree stump grinder with a 35hp Kohler Command pro
I have a tree stump grinder with a 35hp Kohler Command pro engine, CH940 980, with a horizontal crankshaft. It's been blowing a lot of white/blue smoke and going through a lot of oil lately. The engin… read more
Richard
Richard
Senior Mechanic & Technician
69 satisfied customers
Model number and serial number unreadable. How can I determine
Model number and serial number unreadable. How can I determine which engine to order? 2006 exmark 60" lazer z Engine is a Kohler command sp 23 hp.… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
i have a kohler command pro 23 hp on and exmark lazer z. motor
i have a kohler command pro 23 hp on and exmark lazer z. motor serial # XXXXX engine will run smooth for a brief period and then starts smoking and running very eratic and eventually will cut off. whe… read more
Conservative
Conservative
Service Advisor
Vocational, Technical or Trade Scho
281 satisfied customers
Hi, I have a (950D) 23 hp Kubota diesel that came with
Hi, I have a (950D) 23 hp Kubota diesel that came with my sailboat, Universal is the make, they called it a 25-xp. The main forward seal is leaking when the engine runs for an extended period( over an… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a 7 hp Koehler Pro engine on my tractor. After running
I have a 7 hp Koehler Pro engine on my tractor. After running a while the engine begins missing and finally stops. I have replaced the fuel filter, oil filter, plug and checked for blocked airflow aro… read more
RUSS
RUSS
SERVICE TECHNICIAN
Vocational, Technical or Trade Scho
1,723 satisfied customers
How do I change the oil - Kohler Command PRO 23 - Original
How do I change the oil - Kohler Command PRO 23 - Original equipment on a Grasshopper 223 Midmount Mower?… read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,927 satisfied customers
I have a Koehler Command 14 hp and it ran fine last time I
I have a Koehler Command 14 hp and it ran fine last time I mowed after jump starting it. I jump started it this time and it ran fine for a bit but now cuts out and loses power and not enough power to … read more
HondaPlatinum
HondaPlatinum
High School or GED
148 satisfied customers
Kohler Engine (23hp) Command V Twin: Oil coming into fuel pump. Cause?
I have a 23 HP Kohler command vtwin. Oil is coming into the fuel pump from a hose coming from the engine. This, in turn, sprays out of the fuel pump diaphragm. The oil is not overfilled. In reading po… read more
Chris Huber
Chris Huber
President
Vocational, Technical or Trade Scho
501 satisfied customers
I have a Karcher electric pressure washer (model k 3.67 m).
I have a Karcher electric pressure washer (model k 3.67 m). Water blows out around the bottom of the high pressure head and the motor surges while washer is idle. I have replaced the high pressure hea… read more
TaxTom
TaxTom
Accountant
Bachelor's Degree
14 satisfied customers
I have a 3 year old Cub Cadet 54 cut with a 27 hp Koehler
I have a 3 year old Cub Cadet 54" cut with a 27 hp Koehler motor. It has never given me trouble but I went to start it and it is blowing alot of white smoke out of the exhaust. What could be the possi… read more
J.R.
J.R.
Vocational, Technical or Trade Scho
7,173 satisfied customers
Have 23 hp twin vertical engine on zero turn mower. Engine
Have 23 hp twin vertical engine on zero turn mower. Engine blows output shaft seal. Also if oil dip stick is unscrewed during engine operation - oil shoots out of dip stick tube. It pulsates oil disch… read more
Joe02800
Joe02800
High School or GED
54 satisfied customers
I have a 01 exmark lzer hp with a 23 hp kohler command. The
I have a '01 exmark lzer hp with a 23 hp kohler command. The engine is running like the choke is on and using large amunts of fuel. The carb has been cleaned and both plugs replaced. The engine is get… read more
J.R.
J.R.
Vocational, Technical or Trade Scho
7,173 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