[C320-list] Engine stall only under load

[Warren Updike]

Art, we are lucky to have water in the mid to upper Chesapeake Bay that is
mostly fresh so I'm not the one to lament over the ills of salt water. That
said, it's clear that salt water is the bane of all sailors; and, those who
have no choice face increased maintenance from standing rigging to engines
to just about all areas. So, I wouldn't be surprised to learn that it
contributes to a shorter life for exhaust elbows. I would expect that the
heat exchange tubes (if you have those,) would also crud-up faster and need
to be cleaned to prevent erosion. Let's see what some real salt water
sailors have to say about this.

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"

-----Original Message-----
From: Arthur Miller [mailto:millers1 at aol.com] 
Sent: Wednesday, January 22, 2014 4:56 PM
To: C320-List at Catalina320.com
Cc: <C320-List at Catalina320.com>
Subject: Re: [C320-list] Engine stall only under load

Just curious, how does salt water cooling vs fresh water cooling contribute
to exhaust elbow
Fouling??   I operate in salt water and have changed a few elbows.  While
the crud looks dark, banging the elbow (once removed) produces a lot of
corrosion products.  Sooooo, is salt water also a big contributor to
shorting elbow  life?  I note I 90% of the time I only charge batteries
while motoring.
Art.  #680

Sent from my iPad

On Jan 21, 2014, at 5:05 PM, Warren Updike <wupdike at hotmail.com> wrote:

> The exhaust elbow may well be the problem. For some reason, the Yanmars
seem to have more issues than the Perkins. The Perkins elbow is a cast iron
piece. We have over 2,000 hours on our M30 and the last time I looked there
was very little carbon buildup. 
> 
> I remind everyone that diesel engines like to be pushed. The most
efficient rpm is about 80% of the rated "max. rpm" (check mfgrs specs.) If
at all possible, cruise at higher rpm rather than lower. Always give the
engine time to come to full operating temp before shutting down. If moored
or anchored run engine in reverse when charging batteries, as an unloaded
engine pushes a lot of unburned fuel and carbon at lower temps and tends to
accumulate inside.
> 
> Donald, please do let us know what you find. The info can help is all.
> 
> Warren & Pattie Updike
> 1994 C320 #62 "Warr De Mar"
> 
> -----Original Message-----
> From: Donald Poole [mailto:dpoole15 at gmail.com] 
> Sent: Monday, January 20, 2014 7:36 PM
> To: c320-list at lists.catalina320.com
> Subject: [C320-list] Engine stall only under load
> 
> Perkins M30. I can idle for hours regardless of RPM (1000, 1500, 2000,
> 2500) but she stalls when I am underway. I have changed both primary and
secondary fuel filters and the fuel lift pump. still stalls. Anyone have a
suggestion of what I can try next. I'm thinking there may be a fuel tank
problem ( vent or pick up line ) That's my next stop. If that's it I'll post
the result. Appreciate any guidance or even just ideas.
> 
>