Boat

Have Boat Questions? Ask a Boat Repair Expert.

Ask an Expert,
Get an Answer ASAP!

I just purchased a boat with a 15hp, 4 stroke 2010 model Yamaha,

Customer Question
put it in the water...
i just purchased a boat with a 15hp, 4 stroke 2010 model Yamaha, put it in the water the first time (pretty swift river), had a 2.8 mile trip (thank goodness downstream). about 1.5 miles in, engine started choking down, looked and the red light for water temperature was on. Had water coming out the hole in the back when I started, but was not when the light was on. would run only on low throttle then not run at all. would it be the water pump, or does it have a thermostat. the water is 58 degrees! if it is the water pump, how hard is it to change?
Submitted: 3 years ago.Category: Boat
Show More
Show Less
Ask Your Own Boat Question
Answered in 2 minutes by:
7/1/2015
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
Jason
Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 18,172
Experience: Degree in Marine Technology. Gas and diesel marine mechanic.
Verified
Hello my name is ***** ***** am I speaking with?
Ask Your Own Boat Question
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
Do you have any history on the engine?
Ask Your Own Boat Question
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
The engine does have a thermostat. However, on the impeller, that is maintainence item and needs to be changed every other year. They are just rubber, so they do get stiff and loose their ability to pump over time. If to much time goes by and the impeller is not replaced, it will eventually start to fall apart, and shoot bits of rubber up into the powerhead, where it will clog the engine. So the idea here is to replace it before it fails, and not wait until afterwards.
Ask Your Own Boat Question
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
What I do in the shop is a cooling system service. On something like this it would run about 200-225. What I do is replace the impeller, it is always standard operating procedure to change the thermostat at the same time. And while it's all apart I flush the block out with a garden hose to clear any possible obstructions.
Ask Your Own Boat Question
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
As far as is it easy to do..... The thermostat is easy. On the impeller. The lower unit has to be removed in order to access it. Removal is easy. Changing the impeller isn't to bad either. However, what is very tricky and where people run into trouble when they have never done one before Is installing the lower unit back into place. When installing the lower unit, the drive shaft, the water tube and the shift shaft all have to be lined up correctly. And the trick is you can't see any of it, so it all has to be done by feel.
Ask Your Own Boat Question
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
And this is where people get stuck. Usually what happens people will not get the shift shaft lined up correctly, and it will be stick in gear. On top of that, if the gear selector is not on the correct position when it is put back together, and the unit is forced to shift, typically the plastic parts of the shift linkage will break. And it really isn't any fun trying to remove all of that.
Ask Your Own Boat Question
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
So that is where you stand with this one here. Did you have any further questions on the issue? -Jason
Ask Your Own Boat Question
Customer reply replied 3 years ago
nope, will try to get it out of the river and take to a Yamaha shop
Marine Mechanic: Jason, Marine Mechanic replied 3 years ago
You are most welcome and I was glad I could help. Just incase you do not understand the way the website works (and some folks do not). You do have to put forth a positive rating in order for it to credit me for helping you. When ratings are not done, the website simply keeps your deposit and they will not credit me. Please let me know if you run into any problems or errors when trying to do it. If you do have a problem, just reply back "I rate Jason's service _______" and fill in the blank.
Questions do not lose out, so if you have to come back tomorrow or next week with follow up questions to this you still can even after doing a rating.
Thanks,
Jason
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 Jason Your Own Question
Jason
Jason
Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 18,172
18,172 Satisfied Customers
Experience: Degree in Marine Technology. Gas and diesel marine mechanic.

Jason 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

18,172 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
2003 Yamaha outboard 2 stroke overheat buzzer on idle,
2003 Yamaha outboard 2 stroke overheat buzzer on idle , flushed and cleaned water jackets and replaced thermostats, water coming out of pee hole..... upper cylinder gets hot and trips alarm on either … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,172 satisfied customers
I have a 2006 mercury 225HP 4 stroke outboard, they call it
I have a 2006 mercury 225HP 4 stroke outboard, they call it the Frankenstein engine as it is part Yamaha, i have had the fuel system repaired, fuel injectors cleaned and vapor chamber, but still havin… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have 2007 two stroke 50 hp yamaha that sets off an alarm
I have 2007 two stroke 50 hp yamaha that sets off an alarm when get on it. I changed the thermostat and it did not help. Iappears to have good water flow. I pulled the head and tested the temperature … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,172 satisfied customers
Running hot, Mechanic changed water pump at my home. It ran
running hot, Mechanic changed water pump at my home. It ran OK on the trailer using ear muffs. I ran it in the river and the tattle tale water stream was strong at high speeds. Upon returning to the d… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,172 satisfied customers
Gas getting into oil on yamaha f 115 already changed fuel
gas getting into oil on yamaha f 115 already changed fuel pump … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Hows it going. Just picked up a boat w/ older Yamaha 90 2
Hows it going. Just picked up a boat w/ older Yamaha 90 2 stroke giving me an alarm after running on plane for 2-3 minutes. Engine is pee'ing strong and I replaced a bad thermostat, still getting alar… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
Boat alarm with flashing light on gauge. The engine sounds
Boat alarm with flashing light on gauge. The engine sounds the same. It idles fine, but when you start to speed up, the alarm begins to sound.… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
1997 mercruiser 7.4 low hours, fresh water use only, manifolds
1997 mercruiser 7.4 low hours, fresh water use only, manifolds too hot to touch! I replaced impeller,checked water flow with earmuffs,enginr temp is ok at 160 degrees. I pulled off starboard riser it … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
18,172 satisfied customers
The other day i had a family member take our boat out and unfortunately
The other day i had a family member take our boat out and unfortunately we had water in the fuel and had to abandon the trip but the water sensor switch alarm went off so we figured we would drain the… read more
Noel
Noel
Marine mechanic
Diploma
44 satisfied customers
I have a 250 efi mercury 1999 and having overheating issue
I have a 250 efi mercury 1999 and having overheating issue at 3000rpm after 3 to 5 minutes of operation?? This has been going on for about a year we have tried everything , popped valves pulled the cy… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
2007 Yamaha Outboard 40hp. Yamaha outboard temperature warning
2007 Yamaha Outboard 40hp. Yamaha outboard temperature warning alarm went off. I stopped motor and came back home. On land, started motor and no alarm even when reving engine. Took boat on water and a… read more
Malta Tech
Malta Tech
Marine Tech
High School or GED
151 satisfied customers
I have a 2003 90 hp Johnson outboard motor and got stuck in
I have a 2003 90 hp Johnson outboard motor and got stuck in some pluff mud in a lagoon. The overheat alarm did not come on, but I know it got hot, so I removed the Pee valve to make sure there was not… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have 2006 yamaha 15hp 4-stroke tiller model on a 2005 lund
I have 2006 yamaha 15hp 4-stroke tiller model on a 2005 lund 14' wc boat. i'm about 200lbs so the boat sits a little crooked in the water. the carb is on the high side if i'm running wide open & espec… read more
Conservative
Conservative
Service Advisor
Vocational, Technical or Trade Scho
281 satisfied customers
2005 merc 2 stroke runs at 180 degrees at 3200 and above and
2005 merc 2 stroke runs at 180 degrees at 3200 and above and below 1500 degrees at 2000 rpm the temp rises until rpms are increased. water pump checks good, poppet valve good, removed the orfices from… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
Installed New Impeller on Yamaha 150hp 4 stroke ...hooked up
Installed New Impeller on Yamaha 150hp 4 stroke ...hooked up to muffs not peeing out water?… read more
Kenny
Kenny
Mercury & Mercruiser Diagnostics
Master\u0027s Degree
99 satisfied customers
200 hp Yamaha outboard, tuned up last fall at Yamaha shop,
200 hp Yamaha outboard, tuned up last fall at Yamaha shop, and was running fine. I had surgery, and did not run it for several months. This past weekend, put boat in water, and got it started. Had to … read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
Hi I have a Hidea 15HP two stroke outboard. I took it out for
Hi I have a Hidea 15HP two stroke outboard. I took it out for a run the other day to break in the engine. Running a 25:1 fuel/oil ratio, for break in as per owners manual. The motor ran for 25- 30 min… read more
Whitecap36
Whitecap36
Service Manager/Technician
Vocational, Technical or Trade Scho
1,476 satisfied customers
my old E8D yamaha outboard is running at over 450 degrees temperature
my old E8D yamaha outboard is running at over 450 degrees temperature using a laser heat gun aimed near the spark plugs. is this normal or is it overheating it pumps water no problem as i just had a n… read more
Scott Martin
Scott Martin
Service manager
Vocational, Technical or Trade Scho
167 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