When I had a similar problem, we found the propeller was totally fouled -
even though the bottom wasn't that bad. A prop that is nothing more than a
wad of sea food is not good for motoring. Would count for the vibration and
lack of performance.
Get under the boat and take a look. You may be disgusted.
Gary Nylander
Chesapeake Bay
----- Original Message -----
From: "Joel Aronson" <joel.aron...@gmail.com>
To: <cnc-list@cnc-list.com>
Sent: Monday, August 20, 2012 7:21 AM
Subject: Stus-List Yanmar problem
Jackson
Loose alternator belt and dirty bottom? Getting black smoke when u
try to push the rpms? (changed the subject line)
Joel Aronson
On Aug 20, 2012, at 7:03 AM, jackson maddux <jackson.mad...@gmail.com>
wrote:
We are having some mechanical problems with our Yanmar 2GMF. I am hoping
for some advice.....
First admission: other than changing oil, we have not been too good with
our diesel. The boat has also not had much use this summer (about 5x
total).
The hull is scummy, but not encrusted, so we know that the hull is not
the whole problem. A few barnacles on the shaft, but nothing more than
usual for this time of year.
The problem: About 2 weeks ago, my boat partner went for a little motor
cruise and the boat would not go past about 3 knots (normal for us at
2500 RPM is about 4-5 knots).
Yesterday, I got on board and the boat would not accelerate nearly as
fast as before. The engine would not go past 2800 RPM (3300 is usual for
our engine, 3400 is the max rating). The max speed was about 3.5 knots
after a friend, who is a mechanic, bled the injectors and told us to get
a new air filter.
He also told us to get a new fuel filter (and a "better" one than we
have..racor R12P is the name on the filter).
The "charge" light goes on when the engine is on, complete with it's
associated buzzer noise. However, the light extinguishes if the RPM goes
up. We can get the alarm to turn off if we change the switch to
"illumination" from the default "on" position.
Finally: the propeller shaft now has a distinct vibration to it and the
negine seems to bounce around more than it did when we bought the boat 2
years ago. The engine mounts look ok to my amateur eyes. However, we do
have powdery rubber-smelling material in the bilge.
The questions:
1. Bad alternator?
2. New filters etc would be helpful?
3. New engine mounts needed?
4. Anything else that we might be missing before I can a mechanic?
thanks for any replies.
-Jackson Maddux
Schiehallion
C&C 32
_______________________________________________
This List is provided by the C&C Photo Album
http://www.cncphotoalbum.com
CnC-List@cnc-list.com
_______________________________________________
This List is provided by the C&C Photo Album
http://www.cncphotoalbum.com
CnC-List@cnc-list.com
_______________________________________________
This List is provided by the C&C Photo Album
http://www.cncphotoalbum.com
CnC-List@cnc-list.com
