[NSRCA-discussion] YS 160 question

[Bob Lavey]

That’s a great idea, Glen.  Thanks. 

> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org 
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf 
> Of Glen Watson
> Sent: Monday, March 01, 2010 11:31 AM
> To: 'General pattern discussion'
> Subject: Re: [NSRCA-discussion] YS 160 question
> 
> Hello Bob,
> 
> Agree the check valve being able to rotate is suspect.  
> However why not call Richard Verano at YS Parts and Service 
> (775) 267-9252 before replacing parts to validate your 
> running symptoms are relative to this part being able to rotate.
> 
> ~Glen
> 
> 
> 
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf 
> Of Bob Lavey
> Sent: Monday, March 01, 2010 11:02 AM
> To: 'General pattern discussion'
> Subject: Re: [NSRCA-discussion] YS 160 question
> 
> Thanks, Bob.  I'll replace that and see if it helps. 
> 
> > -----Original Message-----
> > From: nsrca-discussion-bounces at lists.nsrca.org
> > [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Bob 
> > Kane
> > Sent: Monday, March 01, 2010 10:41 AM
> > To: General pattern discussion
> > Subject: Re: [NSRCA-discussion] YS 160 question
> > 
> > The check valve should not rotate easily, that sounds suspect.
> > 
> > 
> > Bob Kane
> > getterflash at yahoo.com
> > 
> > 
> > --- On Mon, 3/1/10, Bob Lavey <rjlavey at hotmail.com> wrote:
> > 
> > > From: Bob Lavey <rjlavey at hotmail.com>
> > > Subject: [NSRCA-discussion] YS 160 question
> > > To: "'General pattern discussion'" 
> > <nsrca-discussion at lists.nsrca.org>
> > > Date: Monday, March 1, 2010, 7:16 AM
> > > 
> > > 
> > > 
> > >  
> > >  
> > > YS 160 question
> > > 
> > >  
> > > 
> > > 
> > > Greetings,
> > > 
> > > 
> > > I have a question about the
> > > YS 160 in my Abbra.  I've got about two dozen flights on the 
> > > plane/engine, since I bought it (used).
> > > It's run great up until yesterday, when I barely got one
> > flight on it.
> > > I got as far as the square loop in the intermediate 
> sequence (yeah, 
> > > first maneuver), and it sputtered and choked at the top of the 
> > > vertical line and across the inverted horizontal top line.
> > I rolled
> > > it over, and it seemed okay, so I tried again.  Same
> > result.  I got it
> > > back down without incident and ran the engine on the bench,
> > and it was
> > > lean in the mid-range and top end.  It got very hot during
> > the short
> > > time I ran it on the bench, and it seemed to get leaner the
> > longer it
> > > ran.  I tried the high-end needle and small rich 
> adjustment on the 
> > > pump, but neither helped.  It ran great last weekend, so I
> > don't think
> > > it was a mixture setting.  I then started checking the fuel
> > lines and
> > > vent lines, but they seemed okay.  Then I noticed the check
> > valve on
> > > the head would rotate.  The one on my other 160 doesn't 
> rotate, and 
> > > since I thought those were a press-fit, it doesn't seem
> > like it ought
> > > to rotate.  I gave it a gentle tug, and it didn't come out of the 
> > > head, but it rotates pretty freely.
> > > 
> > > Is that a bad thing?
> > > Or should I continue looking for an air leak in other 
> places?  Any 
> > > other suggestions?
> > > 
> > > 
> > > Does that check valve just
> > > pull off, and I can I replace it by just pushing another
> > one on?  Can
> > > it be that easy? :)
> > > 
> > > 
> > > 
> > > Thanks!
> > > 
> > > Bob
> > > 
> > > 
> > >  
> > > 
> > > -----Inline Attachment Follows-----
> > > 
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