Alright, the saga continues.
We went for a sea trial Sunday after the changes, i.e. Vent line cleared,
filters changed, clamps tightened. The engine ran great all the way to
Cuttyhunk. I probably ran it about 3 hours. Two of those hours I ran it a
little harder than I normally do after having read Don M's reasons for having
black sooty spark plugs. I thought my problems were solved.
On our way home from cuttyhunk, We motored out the harbor and decided that,
because the wind was a little light, we would motor home to run the engine some
more. 50 minutes into our ride home, the same thing, only a bit slower. the
whole, slow, stall happened over maybe a minute or two. Some sputter, then run
normal, a little more sputter, then normal and then a slow stall.
We then sailed home and into the mooring field. This is actually a benefit of
the engine troubles, I've been a bit intimidated about sailing onto the mouth
of the river due to the current and very tight channel flanked by shoals and
some pretty ominous looking rocks. I've now had to sail into the harbor twice
over this last weekend. At one point we were probably doing 4 or 4.5knts
through the water but only 1 to 1.5knts over the ground fighting that current.
On one side of the boat it a big, rocky cliff and the other shoal. it was a
little adrenalin pumping! Anyway, the approach to our mooring was dead, head to
wind, along with the current in the same direction, I lost forward motion under
sail and started the engine. She started right up and we motored onto the
mooring without incident.
So, safely moored, I pulled the vent tube, it was clear. I then went below and
pulled a spark plug and it was all black and sooty again after maybe 4 hours
running time.
I used the Moyer rebuild kit on the carb that is on there now. I'm not sure
but, I think I changed the main jet to the moyer recomended one at that time. I
think it came with the rebuild kit.
My earlier idling issues seemed to have been solved by swapping out the carb
that came with the exchange engine for the one I rebuilt off the original
engine and had just sitting around as a spare. I think what I would like to do
now is, clean up the carb that came with the exchange engine. and swap them
back out. I'll then replace the plugs and run it some more. Unless you guys
think I should maybe try another path forward.
Danny
P.S. Cuttyhunk was Amazing!
--- Begin Message ---
Could be the carburetor. I've had this issue too many times. I chose to take
off the carb, break it down completely and clean it out. Moyer Marine's A4
guide is very useful.
Brian
s/v Rekofa The Blue Whale
1979 C&C 34
Baltimore, MD
Dr. Brian C. Morrison
> On Aug 10, 2014, at 9:48 AM, "Burt Stratton via CnC-List"
> <cnc-list@cnc-list.com> wrote:
>
> Good question. I suppose it is possible but seems unlikely. The fuel pump
> ought to be able to overcome that. Can you drain the trap? I would drain or
> remove the trap and try it. Try a new P-trap designed for the purpose. Might
> want to check the operation of your fuel pump.
>
> I just put my boat in the water for the first time and had a similar issue. 5
> minutes and then stall. Starts back up after a short wait but won’t run for
> longer than about five minutes. Sort of ran if fully choked. Turned out to be
> a broken electrical feed to my electric fuel pump. Hard to believe how long
> it ran without a fuel pump! I guess gravity and vacuum will do part of the
> job, even through two filters.
>
> Skip
>
> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Danny
> Haughey via CnC-List
> Sent: Saturday, August 09, 2014 5:38 PM
> To: cnc-list@cnc-list.com
> Subject: Stus-List Ok more atomic 4 issues...dammit!
>
>
>
>
> -------- Original message --------
> From: Danny Haughey <djhaug...@juno.com>
> Date: 08/09/2014 5:32 PM (GMT-05:00)
> To: derlic...@gmail.com,mda...@darkstar.ca
> Subject: Ok more atomic 4 issues...dammit!
>
>
> Okay so no wind today...
>
> I pulled up to the gas dock, topped off water and fuel, loaded up and away we
> went. Motor was running great! Fired up left dock, motored away. After
> about an hour she seemed to be running out of gas. Stutter ed and stalled.
> Five minutes later, after seeing sail, she started right back up. We sail
> back to our home mooring. I pull the filter on the sepertator, looked clean
> as the day I put it in. Then I thought, maybe the vent is plugged... well,
> it wasn't plugged but it is routed with a trap and that trap was filled with
> fuel. Would this have been enough to starve the engine?
>
> Danny
>
>
> From my Android phone
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