SailNet Community - View Single Post - Yanmar raw water cooling problem
View Single Post
post #5 of Old 06-07-2009
JimsCAL
Senior Member
 
JimsCAL's Avatar
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 3,232
Thanks: 2
Thanked 106 Times in 98 Posts
Rep Power: 10
 
Sounds like the pump is not picking up a prime on restarting. The black water is just some soot that accumulated in the exhaust when no water was flowing. You may need a new impeller or more likely the clearances in the pump have opened up over the years. Sometimes removing the cover and if scored, filing it smooth will solve the problem. I doubt a strainer will help your problem. Note that I only close the seacock of my raw-water cooler Universal diesel at the end of the sailing day, not every time I shut it down. If you have to do that to keep the pump primed, fix the pump.
JimsCAL is offline  
Quote Share with Facebook
 
 
For the best viewing experience please update your browser to Google Chrome