[Rhodes22-list] Outboard repair question

Alan Robertson bigal_61 at msn.com
Thu Sep 3 22:49:14 EDT 2009


Could also be a loose or broken cable from the throttle to the carb.; has happened to us with Johnsons and Evinrudes.
bigal
  ----- Original Message ----- 
  From: david.walker5 at comcast.net<mailto:david.walker5 at comcast.net> 
  To: The Rhodes 22 Email List<mailto:rhodes22-list at rhodes22.org> 
  Sent: Sunday, August 30, 2009 9:53 AM
  Subject: Re: [Rhodes22-list] Outboard repair question


  Out of the blue. But check to make sure that none of you fuel connectors are leaking (not gas but sucking in air). Even the slightest leak will cause severe starting and idle problems. 

  Dave W
  Sent from my Verizon Wireless BlackBerry

  -----Original Message-----
  From: R22RumRunner at aol.com<mailto:R22RumRunner at aol.com>

  Date: Sun, 30 Aug 2009 08:56:48 
  To: <rhodes22-list at rhodes22.org<mailto:rhodes22-list at rhodes22.org>>
  Subject: Re: [Rhodes22-list] Outboard repair question


  Let's back up a step. Was the motor ever running for you normally? What  
  changed or what did you do to it that caused this situation?
   
  Rummy
   
   
  In a message dated 8/29/2009 11:38:51 A.M. Eastern Daylight Time,  
  atmcneil at gmail.com<mailto:atmcneil at gmail.com> writes:


  Well, I rebuilt the fuel pump yesterday and reinstalled it, and  am sorry to
  say it didn't fix it.

  I have the bench manual and it was  talking about the "throttle adjustment
  knob" on the tiller. Well, mine  isn't connected to anything and just spins.
  That may have something to do  with it.

  dang this is frustrating.





  Rick-139  wrote:
  > 
  > Rummy,
  > 
  > Today was perfect for cruising  the North Coast.  We decided to stop in at
  > Wildwood YC for lunch  and you won't believe who helped me tie up.  It was
  > the last  owner of the OMC dealership for this area.
  > 
  > Of course, he was  delighted to see my trusty Yachtwin the PO had bought 
  at
  > his old  store.  Reluctantly (do I lie?), I brought up our argument.   He
  > laughed and said Evinrude typically put diaphragm carburetors on  their
  > high
  > end models. In fact, the diaphragm carburetor was  part of defining the
  > Yachtwin because they do so well maintaining a  steady RPM when the boat 
  is
  > pitching and heeling.  And I must  say, it works very well with mine in 
  the
  > worst conditions.
  >  
  > Unfortunately, he could offer no advice on atmcneil's problem.   He sold
  > 'em,
  > didn't fix 'em.
  > 
  > Anyway, buddy,  if you have a genuine Yachtwin, you have a diaphragm
  > instead
  >  of a float in your carburetor.
  > 
  > Rick
  > 
  > On Fri,  Aug 28, 2009 at 6:42 AM, <R22RumRunner at aol.com<mailto:R22RumRunner at aol.com>> wrote:
  >  
  >> Rick,
  >> First of all, a carburetor does not have a  diaphragm. It might have a
  >> float bowl with a float in it, but no  diaphragm. Replacing the fuel pump
  >> diaphragm is probably the  easiest thing you can do. Simply remove the
  >> cover
  >>  from
  >> the pump, remove the old diaphragm, install the new one and  replace the
  >> cover.  Screwing with the idle and high speed  jets is like doing brain
  >> surgery
  >> on  someone who  simply has indigestion.
  >> Trust me on this one. The fuel pump works  off of vacuum that is created
  >> by
  >> the internal workings  of the engine. When he said it would only run on
  >>  high
  >>  speed (throttle wide open) I knew exactly what it was.  It's sucking gas
  >> through  the fuel pump into the cylinders,  bypassing the carb. Ta Dah!
  >>
  >>  Rummy
  >>
  >>
  >> In a message dated 8/27/2009 5:17:06  P.M. Eastern Daylight Time,
  >> sloopblueheron at gmail.com<mailto:sloopblueheron at gmail.com>  writes:
  >>
  >> Cool it,  Rummy.  This is a constant  fuel velocity design that is 
  running
  >> full  out.  A  simple idle control adjustment should be tried before 
  >>  major
  >> surgery.  If there is a diaphragm problem, the  carburetor  diaphragm (if
  >> there is one) is a more likely  culprit with gunk holding it  down to let
  >> in
  >> too  much air. A detergent additive or a tank of high  detergent gas  
  could
  >> solve it.
  >>
  >> With these engines,  the  quality/stability of the engine oil is more
  >> significant  than the quality of  the gas.  I stick with OMC's  products
  >> just
  >> to be   safe.
  >>
  >> Rick
  >>
  >> On Thu, Aug 27,  2009 at 9:06 AM,  <R22RumRunner at aol.com<mailto:R22RumRunner at aol.com>>  wrote:
  >>
  >> > Rick and  Andrew,
  >>  >
  >> > This is the last time I'm going to tell you what  is  wrong. IT'S THE
  >> > DIAPHRAGM IN THE FUEL PUMP.  REPLACE  IT.
  >> >
  >> > Rummy
  >>  >
  >> >
  >> > In a message dated 8/26/2009   6:13:59 P.M. Eastern Daylight Time,
  >> >  sloopblueheron at gmail.com<mailto:sloopblueheron at gmail.com>  writes:
  >> >
  >> >  Andrew,
  >> >
  >> > This engine is a 2   stroke--generally not bothered by  old gas.
  >> >
  >>  >  Rick
  >> >
  >> > On Wed, Aug 26, 2009 at 6:06  PM, Andrew Collins   <
  >> >  sailingvesselcarmen at gmail.com<mailto:sailingvesselcarmen at gmail.com>> wrote:
  >> >
  >> >  >  Make sure you  have fresh, treated gas. I have a new Tohatsu 4  
  >> stroke
  >> > > that Will not  idle if the gas  is more than a couple  of weeks old
  >> > > This gets  worse  with humid weather
  >> >  > Another symptom is  loping at médium speeds I Will  get a filter  
  for
  >> >  > NeXT season
  >> > > Andrew
  >> >  >
  >> > >  Sent from  mobile device.
  >>  > >
  >> > > On Aug 25, 2009, at  10:41 AM,  atmcneil  <atmcneil at gmail.com<mailto:atmcneil at gmail.com>> wrote:
  >> >   >
  >> > > >
  >> > > > I have an  '94  Yachtwin  (Evinrude) 8hp outboard that has a
  >>  problem.
  >> > > > It   starts
  >> >  > > but will only run at full throttle. It won't idle  at   all.
  >> > > >
  >> > > > Has anyone had this  problem  and how do you fix  it?
  >> > > >  --
  >> > > > View this  message in context:
  >>  > >
  >>  http://www.nabble.com/Outboard-repair-question-tp25135659p25135659.html<http://www.nabble.com/Outboard-repair-question-tp25135659p25135659.html>
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  Sent  from the Rhodes 22 mailing list archive at  Nabble.com.


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