[Rhodes22-list] Outboard repair question

[atmcneil]

Well, I'm picking up a fuel pump rebuild kit today so we should find out if
you're right be the end of the weekend. I sure hope you are right, because I
really would like to get this motor running.



R22RumRunner 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 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> 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  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> 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> 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?
>> > > --
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