From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Hot Starts
To: lml
Date: Tue, 14 Nov 2006 10:01:36 -0500
Message-ID: <web-1564494@logan.com>
In-Reply-To: <1163511415.4559c6770af7f@webmail.grandecom.net>
References: <list-1559523@logan.com>
 <1163511415.4559c6770af7f@webmail.grandecom.net>
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Posted for mmcmanus@grandecom.net:

  I have similar hot start problems with the IO 360 in my Lancair. I have 
tried
  most of the fixes described in the posts on this subject with success, most
of
  the time.  However, I think my start up is related to the shutdown.  The
  throttle body in my plane does not have an idle cutoff (ICO).  So shutdown 
is
  tough.  98% of the time the engine will "disel" for 30-45 seconds before it
  finally stops.  This is after I have pulled the mixture all the way back,
  slowly advanced the throttle all the way forward, AND turned off the mags.
  The
  only way I have found to "smoothly" shutdown the engine is to turn the 
Andair
  fuel selector to off.  This allows the engine to shutdown smoothly, albeit 
it
  takes about 1 minute.
  
  Problem is, if I use the fuel shutoff to stop the engine, a "hot" restart is
  next to impossible.  If I go the other way and let the engine disel until it
  stops, then I can ususally restart the engine with one of the techniques
  described in the other posts.
  
  I understand that the makers of the throttle body sell an add-on that cuts
fuel
  to the throttle body and returns it to the tanks.  I am exploring that with
my
  A&P, but it looks like that will require a lot of work to plumb the return
fuel
  lines.
  
  One thing I will add to the other restart notes.  Using the techniques
  described, when the engine catches it will run very rough.  If I flick on 
the
  boost pump for 4 or 5 seconds AFTER the engine has started, the engine
quickly
  smooths out.  But if I turn the boost on before the engine start, it will
  normally flood the engine.
  
  Matt McManus
  LNC2 360