Cruisers Forum

  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
Thread Tools Search this Thread Rate Thread Display Modes
Old 24-07-2019, 05:23   #1
Registered User
sailalibi's Avatar

Join Date: Jul 2006
Location: Beaufort SC./Bahamas
Boat: Allied Seawind II 32ft ketch, Schucker 436 motorsailor
Posts: 85
yahama 15hp 2 cycle cooling water problem

my yammys impeller went out and the engine overheated to a stop. After replacing the impeller she would run but the pee water became very hot.Also a lot of water would come out between the powerhead and the exhaust housing. Any thoughts?
sailalibi is offline   Reply With Quote
Old 24-07-2019, 07:20   #2
Registered User

Join Date: Feb 2013
Location: Oregon
Boat: Seafarer36c
Posts: 5,565
Re: yahama 15hp 2 cycle cooling water problem

Did you take the water pump apart? If you have not flushed it very often, the small passages under the impeller clog up.
model 10 is offline   Reply With Quote
Old 24-07-2019, 08:19   #3
Registered User
liquidice's Avatar

Join Date: May 2017
Location: Chicago
Boat: Catalina Capri 25
Posts: 232
Re: yahama 15hp 2 cycle cooling water problem

These might give some ideas

Click image for larger version

Name:	D794E9A0-9A20-4C8B-A950-128380451DD6-432-0000004D53F02521.jpg
Views:	42
Size:	43.3 KB
ID:	196498

It sounds sadly to me like a blown gasket or worse. Iím not familiar with this particular motor, but the pieces fit. The water is coming hot out the pee hole, so the thermostat is opening and water is flowing. However, itís probably not getting everywhere in the water jackets and is leaving parts of one or both cylinders uncooled. You mentioned an overheated shutdown situation. When the motor runs too hot, the gaskets can suffer. A cracked block is also an unfortunate possibility, depending on how fast the motor cooled after overheating. Water is coming out where it shouldnít be, the job of the gaskets os to keep it in. Fixing this likely involves a gasket at minimum and a new block at worst. Bummer dude.
liquidice is offline   Reply With Quote

cooling, water

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
New Yahama outboard 1surfrider1 Engines and Propulsion Systems 11 09-02-2016 22:42
Issues with Yahama F6, 6HP, fuel cock aka fuel selector Strider34c Auxiliary Equipment & Dinghy 6 19-10-2015 09:16
Mercury 15hp 2 cycle svBeBe Engines and Propulsion Systems 10 13-10-2014 02:36
Carb Problems - '97 Yamaha 15hp Two Cycle amytom Engines and Propulsion Systems 13 02-04-2011 18:53
Yahama 4hp Outboard north port Engines and Propulsion Systems 3 09-08-2010 09:50

Advertise Here

All times are GMT -7. The time now is 08:48.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.