[Rhodes22-list] Outboard repair question
atmcneil
atmcneil at gmail.com
Fri Aug 28 10:52:06 EDT 2009
I did adjust the idle screw and it didn't have any affect whatsoever. That's
why I'm thinking Rummy may be right. I'm certain the carb will need some
serious adjustment once I can get it to run anywhere but wide open.
Rick-139 wrote:
>
> Did you try adjusting the idle set screw? It is external to the engine
> and
> just changes the stop position of the throttle rod--not a jet adjustment
> as
> Rummy seems to think.
>
> Rick
>
> On Fri, Aug 28, 2009 at 8:33 AM, atmcneil <atmcneil at gmail.com> wrote:
>
>>
>> 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?
>> >> > > --
>> >> > > View this message in context:
>> >> >
>> > http://www.nabble.com/Outboard-repair-question-tp25135659p25135659.html
>> >> > > Sent from the Rhodes 22 mailing list archive at Nabble.com.
>> >> > >
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>> --
>> View this message in context:
>> http://www.nabble.com/Outboard-repair-question-tp25135659p25189122.html
>> Sent from the Rhodes 22 mailing list archive at Nabble.com.
>>
>>
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