[C320-list] Yanmar Problem

[Jeff Hare]

2 things to try. If any of the impeller fins are bent the wrong direction the pump won't prime well.

In a pinch here's a trick to get it primed. Use some plumbers grease or lanocote to coat the impeller and inside of the housing. This seals gaps between the impeller and the inner/outer plate that can make it hard to prime. 

Worked for me in a pinch before I solved this by replacing my pump. 

-jeff hare
#809

Joseph Aberdale <summerwind3 at comcast.net> wrote:

Thanks for your responses. I inspected the impeller after I started it. There are no missing vanes or cracks. There are no air leaks in the line. I think water is getting to the pump because the large clear plastic filter in the line is filled with water. The boat is on the hard. I have the water intake hose disconnected from the thru hull and in a pail of water about six inches higher than the pump. Joe #908 On Apr 17, 2011, at 12:40 PM, Karl Krueger wrote: > Hello Joe: > > How old is the impeller? Did you examine it to determine if the > vanes were > damaged or cracking? If it's older and it sat all winter it's > possible that > one of the vanes broke off when the engine started. > > Also, check the through hull value, make certain it is open and > water is > coming in. It maybe the opening in clogged. > > Best wishes. > > Karl Krueger (Kindred Spirit #282, MKE WI) > > On Sun, Apr 17, 2011 at 8:50 AM, Joseph Aberdale > <summerwind3 at comcast.net>wrote: > >> I started my Yanmar in my 2002 320 and it was working fine. After >> about 5 >> minutes, it stopped sucking cooling water. Prior to starting, I >> opened the >> water pump and the impeller looked fine. It now refuses to suck up >> water >> from the pail. Does anyone have any ideas? >> >> Thank you. >> >> Joe >> #908 >> > > > > -- > Karl W Krueger - ABR, CRS, GRI, CDPE > RE/MAX Realty 100 > Phone - 414-322-6541 > Fax - 414-327-6870