See my comment in-line
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Danny Haughey via CnC-List Sent: Wednesday, August 13, 2014 2:43 PM To: russ...@telus.net Cc: cnc-list@cnc-list.com Subject: Re: Stus-List Ok more atomic 4 issues...dammit! Hi Russ! <Russ Wrote> Is you air filter clean? You mean flame arrestor? Yes <Russ Wrote> engine space too tight? I doubt it. It has pretty large openings from the open side compartment and I ran a hose from a stern mounted, forward faceing vent to the engine compartment and hose from the engine compartment through an exhaust fan, to an aft facing, stern mounted vent. <Russ Wrote> vent blower run continuous? I run the vent about 10 minutes before, all during and at least 10 minutes after, running the engine. <Russ Wrote> main jet too big is already covered off by Moyer, float set too high? or what I believe is the culprit... float needle valve not seating correctly or a bad needle & seat (all it takes is a speck o' dirt there). I'm hoping by opening up and cleaning the carburetor that came with the Moyer exchange engine it will sort out any Jetting or needle valve problems. I think I'm going to have to remove the gas tank completely and get it really, really clean. I'm just hoping I can do it at the end of the season. I think I'm going to redo the engine wiring harness as well over the off season. [Marek Dziedzic] A resoanble filter should take care of this one. Thanks again, Danny ---------- Original Message ---------- From: Russ & Melody <russ...@telus.net> To: Danny Haughey <djhaug...@juno.com>,cnc-list@cnc-list.com Subject: Re: Stus-List Ok more atomic 4 issues...dammit! Date: Wed, 13 Aug 2014 11:16:12 -0700 Hi Danny, You don't need to use premium gas in a relatively low compression engine unless your fuel hose is not gas meth compatible (and maybe some ancient injection equipment as found on old VWs, not the case here!). The higher octane rating does not make it "better" gas but it does slow the burn rate. So, sooty plugs eh. To state the obvious: fuel too rich or more precisely fuel/air ratio too high since we've ruled out plug heat range, low compression and sticky oil wiper rings by virtue of Moyer rebuild. Air side: Is you air filter clean? engine space too tight? vent blower run continuous? Fuel side: main jet too big is already covered off by Moyer, float set too high? or what I believe is the culprit... float needle valve not seating correctly or a bad needle & seat (all it takes is a speck o' dirt there). What is your fuel pump pressure set at? It could be too high. Cheers, Russ Sweet 35-1 east side o' Vancounver Island clouds and showers on first of two weeks off :( At 08:43 AM 13/08/2014, you wrote: I am using champion RC12YC and using regular unleaded gas. I guess if I'm to use premium, I'm going to need to lug it to the boat in 5 gallon jugs... ---------- Original Message ---------- From: JOHN D IRVIN <john.ir...@rogers.com> To: Danny Haughey <djhaug...@juno.com>, "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> Subject: Re: Stus-List Ok more atomic 4 issues...dammit! Date: Wed, 13 Aug 2014 08:38:52 -0700 Are you using a hot enough plug and premium fuel? On Wednesday, August 13, 2014 11:33:11 AM, Danny Haughey via CnC-List <cnc-list@cnc-list.com> wrote: ----- Forwarded Message ----- 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! 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 <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 _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
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