[NSRCA-discussion] Solved: YS 160 question

Mon Mar 1 12:02:47 AKST 2010

I can identify with: "I'm gonna go out and fly this thing no matter how bad it sucks out there.....!" to check something out..  Nothing like a little addictive/compulsive behavior to get something done....:0)

RS

> From: bob.lavey at cox.net
> To: nsrca-discussion at lists.nsrca.org
> Date: Mon, 1 Mar 2010 14:52:34 -0600
> Subject: [NSRCA-discussion] Solved: YS 160 question
> 
> It was the check valve, I'm nearly 100$ certain. I pulled all the fuel
> lines from around the engine: case-to-pump, fuel dot-to-pump, pump-to-carb,
> carb-to-injector. They all looked fine and passed the blow and suck test,
> but I replaced them anyhow. I pulled the check valve and ran a new piece of
> line from the carb to the injector. I also checked the plug while I was
> under the hood, and it looked fine. So, since it's 45 degrees, overcast,
> and there's a 12mph north wind, I went out to the field to see if it was
> better. It was going to bug me until I could check it out :) I reset the
> needle and regulator to their previous settings and gave it a go. It
> started right up, idled fine, transitioned fine, ran good in the mid-range
> and top end, and seemed to have more power. So it put it in the air. I
> pulled into the square loop, and at 1/2-2/3 throttle it pulled up and up
> like it always has. Yay!
> 
> I found a post from Troy Newman on RCU saying you could run without the
> check valve, or I'd have never tried that on my own. It's good to know, in
> case this happens again and I don't have a spare handy.
> 
> Thanks to everybody for their suggestions and assistance.
> 
> Bob
> 
> 
> > -----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 12:07 PM
> > To: 'General pattern discussion'
> > Subject: Re: [NSRCA-discussion] YS 160 question
> > 
> > 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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> > > > 
> > > > 
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