Boat

Have Boat Questions? Ask a Boat Repair Expert.

Ask an Expert,
Get an Answer ASAP!

My 2011 25mercury efi 4stroke is putting gas in the oil,

Customer Question
bottom plug is burning rich...
my 2011 25mercury efi 4stroke is putting gas in the oil, bottom plug is burning rich? iuse this to run bank poles lots idling
Submitted: 2 years ago.Category: Boat
Show More
Show Less
Ask Your Own Boat Question
Answered in 7 minutes by:
1/31/2016
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago
Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 4,910
Experience: US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
Verified

Hello, my name is ***** ***** will assist you today.

Have you had the cooling system checked yet?

Ask Your Own Boat Question
Customer reply replied 2 years ago
no I do need a new impeller
Marine Mechanic: Charles, Marine Mechanic replied 2 years ago

When the thermostat sticks open, it will not allow the engine to warm up properly, this will cause it to run rich all the time and you can get fuel in the oil. Start with removing he thermostat and inspecting it.

Ask Your Own Boat Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a marine mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Dominick Your Own Question
Dominick
Dominick
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1,009
1,009 Satisfied Customers
Experience: 25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Dominick 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:

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

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Ted G.

Ted G.

Rigger, Diagnostician

704 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

17,310 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,264 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,729 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

< Previous | Next >

Related Boat Questions
25hp mercury 4stroke efi will not start seems like it is not
25hp mercury 4stroke efi will not start seems like it is not getting gas I pulled the fuel filter off and turned it upside down while starting and no gas was pulled through … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 25 hp mercury 4stroke that seems to be burning an
I have a 25 hp mercury 4stroke that seems to be burning an alarming amout of oil … read more
Charles
Charles
Marine Mechanic
4,910 satisfied customers
I have a 2001 40hp mercury 2 stroke. It idles fairly good,
I have a 2001 40hp mercury 2 stroke. It idles fairly good, high idle it burns a lot of smoke and sounds like it's missing then I give it gas and I'll get about 2500 rpms out of it. It bogs down and wo… read more
Charles
Charles
Marine Mechanic
4,910 satisfied customers
99 250 efi merc twin engines, strbd engine idles ruff and
99 250 efi merc twin engines, strbd engine idles ruff and has oil smoke at idle even when warmed up. it obviously has too much oil going in at idle. it runs great off idle up to wot of 5800rpm. the pl… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 2000 mercury 200 efi, running really rich at idle
I have a 2000 mercury 200 efi, running really rich at idle and in low rpm ranges. At a mechanics now has had it on the diagnostics and checked over pretty much everything with it all coming back fine.… read more
Noel
Noel
Marine mechanic
Diploma
44 satisfied customers
have a mercury 50 hp 4stroke efi just put on pontoon boat starts
have a mercury 50 hp 4stroke efi just put on pontoon boat starts alright but is running very rough its like choke is on plugs seem alright… read more
Charles
Charles
Marine Mechanic
4,910 satisfied customers
My Mercury 150 HP EFI (2001) has a problem with all the plugs
My Mercury 150 HP EFI (2001) has a problem with all the plugs oiling up and it runs really rough, blowing heaps of smoke. The problem has occured starting 9 months ago, motor would run great then afte… read more
Charles
Charles
Marine Mechanic
4,910 satisfied customers
4.3L mercruiser EFI, wont start and idle in the water. On
4.3L mercruiser EFI, won't start and idle in the water. On Muffs it idles rough and runs rich. I put on a new fuel filter and new IAC......still nothing!?… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
This is a PWC question. We have a 2007 Yamaha waverunner fx
This is a PWC question. We have a 2007 Yamaha waverunner fx ho cruiser. Today my husband was riding when the oil light and alarm came on and the ski shut off. He put the 1 qt of oil that we had in it … read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have just bought a boat with a mercury xr6 150 h.p. 2 stroke,
I have just bought a boat with a mercury xr6 150 h.p. 2 stroke, made a bad calculation and put way to much oil in the gas, how do I fix this?????… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I HAVE A 8 HP 4 STROKE SUZUKI, BOUGHT NEW IN jAN 2010. iT
I HAVE A 8 HP 4 STROKE SUZUKI, BOUGHT NEW IN jAN 2010. iT IS SHUTTING OFF AT LOW & IDLE SPEEDS. i CHANGED THE SPARK PLUGS, THEY LOOKED BLACK. AFTER CHANGING PLUGS THE MOTOR RAN OK FOR ABOUT 4 HRS & TH… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
2003 mercury 90 h p 4 stroke developed dark smoke when start
2003 mercury 90 h p 4 stroke developed dark smoke when start up and in slow speed or tilt motor would stall.Motor was servced 10-2009 for winter storage and problem developed 07- 2010 whn put in water… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
my honda boat motor 45hp 4stroke is running rough. Starts fine
my honda boat motor 45hp 4stroke is running rough. Starts fine and goes full speed but not as smooth running as you expect.… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
I have a 2003 200 EFI Mercury. The last three times Ive been
I have a 2003 200 EFI Mercury. The last three times I've been out, the continous warning beap occured and the boat reverted back to idle. Most of the time it's after I idle for a short period then onc… read more
Jeremy R
Jeremy R
1,069 satisfied customers
I have a 115 hp Merc 4stroke efi. model 115EXLPT. a frien
I have a 115 hp Merc 4stroke efi. model 115EXLPT. a frien borrowed it and ran it out of gas. I got it started again. it just decided to slow down and quit. I changed the fuel filters, and it runs a lo… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have a 1997 24 foot Chapparell with a 5.7 EFI mercruiser
I have a 1997 24 foot Chapparell with a 5.7 EFI mercruiser that wants to stick on high idle alot and the only way to fix it is to shut it off and restart it,also it seems to be running rich,I get lots… read more
Dr. Joe
Dr. Joe
Bachelor's Degree
198 satisfied customers
I have a mercury big foot motor 25 hp. I bought the boat ...
I have a mercury big foot motor 25 hp. I bought the boat used, had a used 70hp merc 2 cycle. I made a mistake on the oil,I added 2 cycle oil in the 4 stroke motor. I didn''t realize the mistake until … read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
My boat engine is burning rich at idle and if I troll to ...
My boat engine is burning rich at idle and if I troll to catch fish it fouls the plugs. It is a 1986 Volvo Penta 225E The plugs re gaped at 35 and normally only the 2 front plugs are badley fouled3958… read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
704 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