[NSRCA-discussion] Ideas?

[Richard Strickland]

And I would loosen and re-torque the head-after checking for bearing boogers
attached to the dome and piston, check motor-mount tightness and prop
balance and make sure something isn't causing the fuel to foam like a loose
pipe mount.  I agree with Jim-look at the fuel delivery system and if it's a
newer batch of fuel-that'll tell you something.  One other thought-take the
pipe off and shake it vigorously and make sure it hasn't plugged itself
up-clean it with thinner and high pressure-you'll be surprised by the amount
of crap that comes out.  Globs WILL plug things up in many pipes-and I think
the composite ones are more prone AND it causes intermittent problems...  Do
this FIRST.

RS

 -----Original Message-----
From: 	nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]  On Behalf Of
jivey61 at bellsouth.net
Sent:	Friday, July 14, 2006 11:25 AM
To:	NSRCA Mailing List
Subject:	Re: [NSRCA-discussion] Ideas?

Ron
Since you changed fuel that seems to rule that out.Put his engine in another
plane if you can.
What it sounds like to me is that the bearings are bad in both engines and
the contamination is killing the plugs. Don't say impossible at this
point.The only other thing is the fuel which was common to both engines. Do
you remember all the trouble I had 2 years ago?My problem was in my
container the I put my fuel in. It was contaminated and when I filled the
pumping container, the engines would run fine until the contaminate mixed
with the new fuel and then trouble happened. I pump from the gallon fuel jug
that I buy the fuel in now and have no more fuel problems.
Good luck at the nats, I can't make it this year.

Jim Ivey
----- Original Message -----
From: "Ron Van Putte" <vanputte at cox.net>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Friday, July 14, 2006 11:36 AM
Subject: [NSRCA-discussion] Ideas?


> John Fuqua has been having an annoying and thoroughly confusing
> problem.  He has been using two different OS 1.40 RX engines for the
> past three years and they've run flawlessly until recently.  He's had
> one in an Impact since the early spring.  A month or so ago, the
> engine started dying in the air periodically when he advanced the
> throttle from idle.  He tried adjusting the idle mixture control and
> the main needle valve and the problem seems to go away.
>
> Suddenly, a few days ago, the engine would die as soon as the ignitor
> was removed.  No problem:  it's the plug(s).  He's using the Mintor
> 1.40 head on these engines and they have two plugs.  Replace both
> plugs.  Engine ran flawlessly for the rest of the flying session.
> The next day, the problem was back, exactly like it was the day
> before.  Then we removed the entire fuel system, cleaning everything
> and replacing the fuel tubing, fuel filter and tank clunk.  Replaced
> the glow plugs as well.  Engine ran flawlessly for the rest of the
> flying session.  The next day, the problem was back, exactly like it
> was the day before.   Yanked out that engine and installed its twin,
> fresh after a rebuild.  Engine ran flawlessly for the rest of the
> flying session.  The next day, the problem was back, exactly like it
> was the day before.  John has been using Morgan 20% heli fuel as long
> as he's been running these engines and it's worked great.
> Nevertheless, during this ongoing saga, we tried Morgan 30% heli fuel
> and Morgan Pro Power 20% and nothing seems to break the pattern.
> HELP!  We leave for the Nats tomorrow.
>
> BTW, I have been using an OS 1.40 RX in my airplane for the past two
> seasons and have loved it.
>
> Ron Van Putte
>
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