Boat

Have Boat Questions? Ask a Boat Repair Expert.

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

mercury 60 hp.efi bigfoot 4 cycle 4 cyl. 2004 model Heat…

mercury 60 hp.efi bigfoot 4...
mercury 60 hp.efi bigfoot 4 cycle 4 cyl. 2004 model
Heat sensor alarm coming on.Psi water pressure gauge not working only under air pressure.Flushed system with water and air pressure.Replaced water pump and thermostat.
Engine temperature running around 145 degress at it's highest.Alarm comes on at 2000 rpm's but you're able to run 2500 rpm's after removing thermostat but alarm still comes on after running for awhile.Running engine while not moving , it will run about 3500 rpm's for awhile before alarm goes off.This is a continuos alarm and not a intermitent one. I don't have a manual so i can't find the sensor too see if i have a improperly working sensor.At what temp should the alarm go off? also i'm getting a good stream of water coming from the engine.
Show More
Show Less
Ask Your Own Boat Question
Answered in 1 hour by:
6/27/2010
Jeremy R.
Jeremy R., MarineTechnician
Category: Boat
Satisfied Customers: 9,020
Experience: Multiple factory certifications 20+ years of experience.
Verified
Welcome, it sounds like a restriction in the cooling or the poppet valve is stuck closed, or even a bad impeller housing or seal. What is the serial number of the motor so i can post pics up of it
Jeremy R.
Jeremy R., MarineTechnician
Category: Boat
Satisfied Customers: 9,020
Experience: Multiple factory certifications 20+ years of experience.
Verified
Jeremy R. and 87 other Boat Specialists are ready to help you
Ask your own question now
Customer reply replied 8 years ago
Where on the motor is the serial # ? This motor was bought new in 2004.I'm handicapped and i can't get to the motor too check ,and at this time i have no one too help.
Customer reply replied 8 years ago

MY MECHANIC SAID THE IMPELLER HOUSING SEAL WAS REPLACED AND HOUSING WAS OK. HE FOUND THE # XXXXX THE ENGINE OT812272 ,I HOPE THIS WILL HELP.COULD YOU TELL ME WHERE TO LOCATE THE SENSOR?

Customer reply replied 8 years ago
IS OT812272 A GOOD #?
sorry about the delay, this answer was never showing up to respond to it. he should have replaced the housing also! the poppet is built into the thermostat
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 Jeremy R. Your Own Question
Jeremy R.
Jeremy R.
Jeremy R., MarineTechnician
Category: Boat
Satisfied Customers: 9,020
9,020 Satisfied Customers
Experience: Multiple factory certifications 20+ years of experience.

Jeremy R. 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
I have a 2004 Mercury 90hp 2 stroke outboard. OT905823 SN.
Hello, I have a 2004 Mercury 90hp 2 stroke outboard. OT905823 SN. Having some issues I was hoping you could assist me with. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 2002 90 hp Yamaha outboard that sets off the alarm
I have a 2002 90 hp Yamaha outboard that sets off the alarm when it is run over 4,000 rpm. Thermostat, thermo/switch and water pump have been replaced. What could be the problem?… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
2002 Merc 4stroke bigfoot continuous alarm. Starts up, idles
2002 Merc 4stroke bigfoot continuous alarm. Starts up, idles well. Runs at speed for a minute or two and then alarms and throttles down. Water jacket 115 degrees(florida 90 degree ambient water temp) … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 1999 150 hp evinrude on my Sea Hunt boat, when running
I have a 1999 150 hp evinrude on my Sea Hunt boat, when running at 3500 RPM and above after approx 30 seconds I will get check engine light and horn. Then I pull the throttle back and the horn will st… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
2001 200hp mercury outboard carb, over heats at 4000 rpm .
2001 200hp mercury outboard carb, over heats at 4000 rpm . I changed the pump,thermostats ,poppet valve . Tell tale spirts when throttle reved up then stops for 3 seconds before it starts peeing ..… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 1998 115HP Evinrude and recently started getting overheat
I have a 1998 115HP Evinrude and recently started getting overheat alarm and SLOW mode while steady cruising at 3500 to 4000rpm. Water pressure gauge shows 28 psi at this speed and temp gauge says 160… read more
Noel
Noel
Marine mechanic
Diploma
44 satisfied customers
I have an 06 mercury opti 150hp I have an alarm going off.
I have an 06 mercury opti 150hp I have an alarm going off. I have already replaced the water pump this year and my oil tank is full. It isnt a real loud alarm but none the less an alarm. The only time… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I own a 2008 mercury 175 OptiMax in Florida waters (between
I own a 2008 mercury 175 OptiMax in Florida waters (between 70 - 90 degrees). The engine water temperature routinely exceeds 170 degrees when running at a trolling speed, and especially if the boat ca… read more
Abiorca
Abiorca
Proprietor
Vocational, Technical or Trade Scho
1,768 satisfied customers
i have a 1991 175 merc and the motor alarm came on so i changed
i have a 1991 175 merc and the motor alarm came on so i changed the water pump and tried it out and the alarm came on again its pumping water good through the exit port on the back of the motor and th… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
hi, my 1999 150hp yamaha overheat alarm for the Left bank keeps
hi, my 1999 150hp yamaha overheat alarm for the Left bank keeps going off if I go around 4000 rpms / higher. I replaced water pump, thermostats, sensors, Used a thermo gun on it when alarm went off ac… read more
Jeremy R.
Jeremy R.
MarineTechnician
9,020 satisfied customers
i have a 25 hp mercury bigfoot 4 stroke that is leaking a little
i have a 25 hp mercury bigfoot 4 stroke that is leaking a little bit of water out of the gasket at the base of the engine into the engine compartment right below the exhaust cover. is it alright to ru… read more
Jeremy R.
Jeremy R.
MarineTechnician
9,020 satisfied customers
i have a 1994 evinrude200xt,i am getting a buzz alarm losing
i have a 1994 evinrude200xt,i am getting a buzz alarm losing all most power;it is telling me it is over heating,i have a steady stream of water coming out ,don't know how strong of stream i should hav… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
hello,my wife and I recently purchased a pontoon with a 05
hello,my wife and I recently purchased a pontoon with a 05 mercury 60 hp injected bigfoot outboard motor,we have taken it out several times without any issues, but the last two time out, a warining to… read more
Jeremy R.
Jeremy R.
MarineTechnician
9,020 satisfied customers
My 60hp Mercury 4 stroke Bigfoot water pressure at idle 3-4
My 60hp Mercury 4 stroke Bigfoot water pressure at idle 3-4 psi, pressure follows throttle to 20 psi at WOT than slowly drops to 10 -12 psi. Good water stream from weep hole. Have back flushed engine,… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
My Mercury 200 Optimax will sound an alarm about 2500 rpm and
My Mercury 200 Optimax will sound an alarm about 2500 rpm and at 3000 rpm it sputters and at 31-3200 it quits. What could be the problem?… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
our 60hp bigfoot is 4 years old. Lately a warning buzzer has
our 60hp bigfoot is 4 years old. Lately a warning buzzer has been going off. The "pee'r" is working well, the engine oil is very clean and the motor runs well. I have run the motor , at it,s mooring, … read more
Abiorca
Abiorca
Proprietor
Vocational, Technical or Trade Scho
1,768 satisfied customers
I HAVE A 2000 MERCURY OUTBOARD 40 H.P. I INSTALLED A NEW IMPELLER
I HAVE A 2000 MERCURY OUTBOARD 40 H.P. I INSTALLED A NEW IMPELLER BUT THE WATER COMING OUT IS NOT VERY STRONG. WHATS UP WITH THAT ?? SOMEONE TOLD ME IT HAD A THERMOSTAT AND IT NEEDED TO BE REPLACED. H… read more
FieldServiceTech
FieldServiceTech
Vocational, Technical or Trade Scho
146 satisfied customers
I run my boat about a mile,a solid alarm comes on.I idle a
I run my boat about a mile,a solid alarm comes on.I idle a few minutes,the alarm goes off.This keeps repeating itself.I have a new lower unit and new water pump,also I have good water pressure(18-20 l… read more
davesoutboard
davesoutboard
owner
Associate Degree
1,570 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