[C320-list] Engine stall only under load

[Donald Poole]

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.

[Jerry Clayton]

When was the last time the exhaust mixing elbow was replaced? 

Regards, 
Jerry Clayton
#988 (2004)

<div>-------- Original message --------</div><div>From: Donald Poole <dpoo...@gmail.com> </div><div>Date:01/20/2014 4:35 PM (GMT-08:00) </div><div>To: c320...@lists.catalina320.com </div><div>Subject: [C320-list] Engine stall only under load </div><div>
</div>Perkins M30. I can idle for hours regardless of RPM (1000, 1500, 2000,

[Dingo Is Talent]

JERRY is Right Donald
Exhaust Mixing Elbow will be it if it hasn't been replaced in 4 - 5 years.
Mine clogged up with corrosion which causes back pressure into motor causing it to run poorly...
Motor revved perfectly when NOT under load...as soon as under load it ran low revs and pumped out some dark smoke..
It is caused by the sea water coming in to cool the exhaust which builds up corrosion over time in the elbow reducing the volume going through the PONG box and out..
DINGO
Down Under
1150

[wfl...@aim.com]

Are you sure that there isn't anything wrapped around the prop/shaft?

[Warren Updike]

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:dpoo...@gmail.com]
Sent: Monday, January 20, 2014 7:36 PM
To: c320...@lists.catalina320.com
Subject: [C320-list] Engine stall only under load

[Karl Krueger]

Out of curiosity, I have a Westerbeke with about 550 hours, does anyone
have experience with their elbows?

Karl Krueger
Kindred Spirit #282
Milwaukee WI
a sunny 9 degrees

--
Karl W Krueger - ABR, CRS, GRI
RE/MAX Realty 100
Phone - 414-322-6541
Fax - 414-327-6870

[Jeffrey Brown]

I was told (not sure if it's true). Many of us that use the engine only to get out of the harbor before raising the sails, and for the most part motoring out at 1500 RPM or something like that before shutting her down. I was told by a mechanic to always "open her up" for a few minutes before shutting down, so that's what I do. The low RPM will allow the carbon build up much faster than if you allow it to "burn off" at higher RPM's each time. I'm sure what I am saying is not as technical as most would write but that's my layman's version, because that's all I know.

I did have to change my elbow a few years ago, it had the original, about 15 years old and the hole in the elbow was about the size of pin which was causing all my problems. I have checked it recently but it seems to run just fine. I learned all the this worst way possible, on the day I took possession of the boat about ready to take her on the 70 mile journey from San Diego to Dana Point. I really thought I bought a lemon and had serious buyers remorse. Luckily I had Vessal Assist to tow me for 9 hours to Dana. Replaced the elbow and she was perfect.


Jeff Brown
"Out of the blue" Dana Point, CA
Hull 78
(949) 350-5123
ocean...@mac.com

[JJ Morrison]

the Owners Manual for the Yanmar 3GM30F does indeed recommend giving the throttle a good shot prior to engine shutdown. I shoot up to 2500RPMs for 5sec or so. Never had a problem with 1000hr on the engine. Not sure what Perkins recommends but I know that not all diesel engine manufacturers recommend it.CheersJohnM1999#574

[Rick Sulewski]

Karl,
No issues with my Westerbeke after 1,200 hours. Over the years have run into
some irritating issues that I had to run down like: a cracked hot wire to
the starter; a failed fuel pump that may not be detected until the tank goes
below 1/4th because the gravity feed will keep the engine churning ( a
replacement at NAPA for $29 is an easily item to keep on the boat); a
pinched thermo sender wire that grounded out the temp gauge causing it to
falsely register a pegged gauge; a cracked oil sender switch lead that set
off the low oil warning alarm that only required a softer, more flexible
wire extension to solve that problem because the stiffer wire was breaking
the lead on the sender switch.....just like an older motorcycle, the stuff
that shakes can break at an unexpected time.....so it pays to periodically
(or at least at the beginning of the season) to look for loose wires and
bolts while becoming familiar again with what may contribute to a sudden
issue that may easily be resolved with simple tools.
Rick
My-Ria 95 320 #277

[sail...@aol.com]

Karl,
Can you supply the part # of the pump that you used as a replacement?
tx
Lew

-----Original Message-----
From: Rick Sulewski <rsul...@bex.net>
To: C320-List <C320...@Catalina320.com>
Sent: Wed, Jan 22, 2014 12:52 am
Subject: Re: [C320-list] Engine stall only under load

Karl,

o issues with my Westerbeke after 1,200 hours. Over the years have run into

ome irritating issues that I had to run down like: a cracked hot wire to

he starter; a failed fuel pump that may not be detected until the tank goes

elow 1/4th because the gravity feed will keep the engine churning ( a

eplacement at NAPA for $29 is an easily item to keep on the boat); a

inched thermo sender wire that grounded out the temp gauge causing it to

alsely register a pegged gauge; a cracked oil sender switch lead that set

ff the low oil warning alarm that only required a softer, more flexible

ire extension to solve that problem because the stiffer wire was breaking

he lead on the sender switch.....just like an older motorcycle, the stuff

hat shakes can break at an unexpected time.....so it pays to periodically

or at least at the beginning of the season) to look for loose wires and

olts while becoming familiar again with what may contribute to a sudden

ssue that may easily be resolved with simple tools.

ick

y-Ria 95 320 #277
-----Original Message-----
rom: c320-lis...@lists.catalina320.com
mailto:c320-lis...@lists.catalina320.com] On Behalf Of Karl Krueger
ent: Tuesday, January 21, 2014 5:42 PM
o: C320...@catalina320.com
ubject: Re: [C320-list] Engine stall only under load
Out of curiosity, I have a Westerbeke with about 550 hours, does anyone have
xperience with their elbows?
Karl Krueger

indred Spirit #282
ilwaukee WI
sunny 9 degrees

ust ideas.




-

arl W Krueger - ABR, CRS, GRI

E/MAX Realty 100
hone - 414-322-6541
ax - 414-327-6870

[Karl Krueger]

Rick:

Thank you very much for the information. The only problem I've had was the
have
to replace the starter last summer.

Again, thanks for the info.

Regards,

Karl Krueger
Kindred Spirit #282
Milwaukee WI

[Arthur Miller]

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

[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.

[Sandy Olson]

Hi all,

I am looking to replace my original Portlights with the newer version. Can anyone tell me the size of these needed to replace on a 1997 hull 466.

Thanks

Sandy & Mike

Sent from my iPad

> On Jan 23, 2014, at 4:54 PM, Warren Updike <wup...@hotmail.com> wrote:
>
> This message cannot be displayed because of the way it is formatted. Ask the sender to send it again using a different format or email program. text/plain

[Bruce Heyman]

Salt water is better for wooden boats, less rot.

Bruce Heyman
(949) 289-8400

Warren Updike <wup...@hotmail.com> wrote:

>Sent from my iPad

[Kaare Wold]

At the Strictly Sail Show, in Chicago, we stopped at the Yanmar booth. A
representative from Mack Boring and another technician explained how a
diesel loves heat (unlike a gas engine). They said you can't hurt the
Yanmar if you ran it wide open all day. I cringe at the thought, but the
point is, idling and slow running is the worst thing for the engine. They
both advised that a 80% throttle is recommended for normal motoring. I
guess we "baby" ours too much. The technique to crack the throttle prior to
shutting down is good. The entire discussion is all about carbon build up
and ways to prevent or minimize it. The exhaust elbow is a common culprit
in poor performance. They took a flashlight and showed us how to examine
the divider plate inside the elbow. If that plate is corroded, scaley or
deteriorated, it is time to change it.
Our 660 hr engine runs fine, but we will be more aware of increasing rpms to
reduce carbon buildup.
Kaare & Mary Wold Sheet Music #945

=

[thar...@innovations-plus.com]

Did you take any pictures? This sounds like a great procedure to practice. Maybe twice a summer.

Do you have to take off the elbow completely?

Great information.

Ted - hull 424

Sent from my iPhone