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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Starting the IO-550
To: lml
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Date: Sat, 26 Feb 2005 12:47:00 -0500
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Posted for erosiak@comcast.net:

  I have not had problems starting the TSIO-550E in my ES hot or cold.  Cold 
is
  easy, the large Continentals like to be primed. Unless it hasn't started in
some time, I usually don't see any sniffle valve draining. I had no problems
with the
  TSIO-520 in the T210 we owned prior either.
  
  Hot starts depend upon how long the plane has been sitting. After 30 minutes
or
  so, on a very hot day, pulling the mixture and cooling the fuel pump via
running
  the high boast seems to work well. However, I have found on my ES that if I
  simply provide full rich mixture, and crack the throttle at start, (no 
prime)
and turn the key she will always catch within a few turns. Then the key to
keeping her running is a few shots of prime, or low boast if it is very hot.
Just remember to turn off the low boast before takeoff.
  
  A few years ago I did a fuel pressure adjustment with Dave Saylor of
Aircrafters
  in Watsonville CA., which required numerous start and stops on a very warm
day.
  It started every time, using the primer or low boast pump, as required.
  
  When I park for a short stopover I try to point into the wind and always 
open
  the oil filler door too. So far so good, 275 hours later.
  
  Ed Rosiak
  Super ES
  
  
> <<But over-priming is so commonplace that TCM has required us to install a
> drainage system specifically to handle this problem. Am I the only one
> who finds it crazy to install sniffle valves in our 21st century
> airplanes? SNIFFLE VALVES! We have somehow been conditioned to accept
> that it is normal for our engines to dump raw fuel on the ramp during
> startup!>>