[C320-list] Yanmar Problem

[Mike Ott]

Joe,
Since your on the hard you could use a garden hose with an adjustable ball-value 
to regulate the flow and pressurize the system.  The Yanmar pump can be weak and 
we tend to forget that when we're in the water we have close to 12 tons of 
displacement helpping to pushing raw water into the engine.  Use some plastic 
tubing inserted into your throughull, attach a hose barb to the ball-value and 
connect to your garden hose.  I regulate the flow to that of a bubbler, the less 
pressure the better.  I use this method to check and run-out the engine before 
we launch, when it finally warms up in New England.
Mike
"Amanda Lu"
#508




________________________________
From: Joseph Aberdale <summerwind3 at comcast.net>
To: C320-List at Catalina320.com
Sent: Sun, April 17, 2011 12:54:22 PM
Subject: Re: [C320-list] Yanmar Problem

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