[NSRCA-discussion] YS 140 help

[Jerry Stebbins]

DoWayne, I would check the needle and seat both. If you have a set that runs 
ok, try the whole assy package in the other engine. YS changes 
configurations without changing the part no. There are at least two 
different assembly's that do not interchange!You cannot run the wrong 
needle--it will not run. We have mixed up needles during rebuilds and had a 
similar problem. Found out the hard way that they are different, and you 
cannot mix them.
Jerry
----- Original Message ----- 
From: "DoWayne Gould" <iflyrc24 at gmail.com>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, July 24, 2006 8:31 PM
Subject: Re: [NSRCA-discussion] YS 140 help


> Thanks for all the suggestions. I am kind of disappointed only one buy OS
> crack and not one word from the electron crowd.
>
> So far I have replaced the pump plunger and button (?) and diaphragm,
> checked valve cover gasket and lapped valve cover flat, replaced fuel 
> lines,
> removed carb and barrel blew thru and cleaned passages that I could find.
> Still won't run.
>
> I did find the low speed needle would only protrude into the air bleed 
> hole
> about 1/32" bottomed out. I compared this needle with one out of another
> engine and it is about 1/16" shorter than the one that runs.
>
> If a new low needle doesn't work it's going west.
> Dowayne
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Bob Kane
> Sent: Sunday, July 23, 2006 11:12 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] YS 140 help
>
> If you are coming up to Mike Darr's contest I can have
> a look at it.  Sounds like there is not enough fuel
> getting to it for whatever reason, junk, gunk, dirt,
> grass, and or swelled silicone somewhere.
>
> --- DoWayne Gould <iflyrc24 at gmail.com> wrote:
>
>> YS Experts
>>
>> I have a 140S that I can't get to run correctly. The
>> engine won't start or
>> run under half throttle.  When it does start it will
>> surge bad for a short
>> while slow down and quit. If you try to throttle up
>> or down it will quit.
>> The engine will be very hot after a 60 second or so
>> run attempt.
>>
>>
>>
>> I am using Powermaster 20/20 fuel, APC 16-10, the
>> regulator is flush, High
>> speed needle has been from 1.5 to 3 turns out, low
>> speed out 1.5 turns. The
>> check valve is in working order and filter is new.
>> the tank does pressurize
>> and hold it.
>>
>>
>>
>> This engine has been stored for around a year.
>>
>>
>>
>> Any help will be greatly appreciated
>>
>> Dowayne
>>
>> > _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion at lists.nsrca.org
>>
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>
>
> Bob Kane
> getterflash at yahoo.com
>
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