overheating kubota - Page 4 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #31  
Old 05-27-2007
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Sounds like there's a hole or leak in the heat exchanger. That's the only place that you'd likely get anti-freeze in to the raw water side of the system. If there is a leak there, the overflow tank won't do anything, since it isn't overflowing...it's just leaking out.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #32  
Old 05-27-2007
camaraderie's Avatar
moderate?
 
Join Date: May 2002
Location: East Coast
Posts: 13,877
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 15
camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
Keith...did the mechanic remove your heat exchanger and look for those pieces of impeller blades? I believe you have a corrosion problem in your heat exchanger and given the anti-freeze in your exhaust it may need to be replaced as this is the likely place for exhaust water and antifreeze to meet. At the very least, the heat exchanger should be removed and pressure tested and reamed out. Is there a pencil zinc on the heat exchanger....and has it been changed out...what shape was the old one in?

Last edited by camaraderie; 05-27-2007 at 08:46 AM.
Reply With Quote Share with Facebook
  #33  
Old 05-27-2007
Member
 
Join Date: Jan 2006
Posts: 84
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
mrkeith is on a distinguished road
thanks all, i will take the heat exchanger out again this week and have it retested. the first time we took it out there was not a leak, but they didnt pressure test it. also there were bits of impeller there the first time that were removed, which i originally thought was the problem. i was thinking, the problem really only seems to be an issue when the rpms start to get higher...i m guessing thats logical as the more pressure in the system, the more water is being forced out by the leak?
Reply With Quote Share with Facebook
  #34  
Old 05-27-2007
Member
 
Join Date: Jan 2006
Posts: 84
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
mrkeith is on a distinguished road
one other question, am i correct in believing that when we saw the coolant come out of the exhaust, that this was a pretty good clue? meaning coolant should never come out of the exhaust right? cheers
Reply With Quote Share with Facebook
  #35  
Old 05-27-2007
Senior Member
 
Join Date: Aug 2006
Location: Arlington, VA
Posts: 1,810
Thanks: 0
Thanked 4 Times in 4 Posts
Rep Power: 10
btrayfors will become famous soon enough btrayfors will become famous soon enough
Right...you should never see coolant coming out the exhaust.

There are several other possibilities where fresh (circulating) water can be mixed with the raw cooling water which goes through your exhaust, but let's hope it's just the heat exchanger. These are easy to change and relatively inexpensive :-)

Bill
Reply With Quote Share with Facebook
  #36  
Old 05-28-2007
Member
 
Join Date: Jan 2006
Posts: 84
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
mrkeith is on a distinguished road
thanks for that. i will keep you updated
Reply With Quote Share with Facebook
  #37  
Old 05-29-2007
Junior Member
 
Join Date: Apr 2006
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
olepedersen@yahoo.com is on a distinguished road
to make you feel good,I operate several boats , my Kubota has operated in all areas from georgian bay to florida since 1973 and is still going good, but remember when it changes its tune ,check it right away it is talking to you..
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Kubota engine Edo Kazumichi Gear & Maintenance 6 11-25-2006 02:32 AM
Overheating Perkins 4-108 Eleanna Gear & Maintenance 13 07-24-2006 06:59 AM
Kubota Diesels - Nanni Tarponguy Gear & Maintenance 6 12-19-2005 11:46 AM
Volvo MD11C Overheating takwita Gear & Maintenance 2 05-16-2004 05:47 AM
Perkins 4.108 overheating singingdrum Gear & Maintenance 2 04-22-2003 07:19 AM


All times are GMT -4. The time now is 07:01 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.