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Berni,
I just got around to reading my mail saw you inquiry. I had a similar
problem with an ES several years ago and discovered a loose connection
at the electric boost pump that was above the level of the fuel in the
tank and didn't show as a leak but would let air in when the engine pump
was sucking fuel through the connection.
Another thing you might check is you metered and unmetered fuel pressure
in the injection system.
Good Luck.
Lanny
-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of
Berni
Sent: Wednesday, May 25, 2011 12:45 PM
To: lml@lancaironline.net
Subject: [LML] Re: Fuel restriction or air part 2
I have received a few responses that point to heat as a potential
culprit. To date I have been reluctant to believe this is the cause as
my airframe/engine/fuel systems have over 1000 hours of flight time with
zero previous symptoms such as fuel pressure, fuel flow and engine
surging. Since I have come up with any other cause. I am going to look
at this as a potential cause.
I will continue to update the list as I pursue a remedy. In the
meantime I welcome any and all suggestions.
Berni Breen
Sent from my iPhone
On May 25, 2011, at 6:41 AM, "Steve Colwell" <mcmess1919@yahoo.com>
wrote:
> Berni,
>
> My first response to your problem was a quick copy and paste of my
post when
> I was having the same symptoms. I hope it made sense. Consider the
> recommendations I quoted from Continental, Cirrus and Advanced Pilot
> Seminars to run the low boost pump above 10,000'. Temperature under
the
> cowling, fuel temperature and density altitude are all factors. If
your
> firewall fuel line routing or temps are just a little higher than some
other
> applications it could easily cause your problem. My Legacy has 1/2"
fuel
> line all the way to the Gascolator and a engine pump shroud (from
Lancair)
> with a blast tube and I still had the problem. Low Boost solved it
for me.
>
>
> Steve Colwell (recent Barrett engine running great)
>
>
> --
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