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1. 07:05 PM - Re: KIS Engine Stoppage ()
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Subject: | Re: KIS Engine Stoppage |
3/3/2010
Hello JF, Sorry to hear that your engine is still giving you difficulty.
Some comments and questions:
1) What pump are you using for an electric fuel boost pump and to provide
priming fuel?
2) Do you have any way of reading the fuel pressure that the electric fuel
boost pump is putting out while you are priming the engine?
3) Have you tried turning the electric fuel boost pump on right after the
engine has started running to see if that would keep the engine running?
4) You wrote: "I am making an instrument which should help me to determine
depression that fuel pump must provide to be able to feed engine and check
if during a periode of time I encounter some variations with the depression"
This SID describes the official factory way of accomplishing what you are
planning and more:
http://www.tcmlink.com/pdf2/SID97-3E.pdf
I purchased two gauges and put together a mounting rig for those gauges and
some connecting hoses in order to perform the adjustments required by this
SID. Maybe some other IO-240 operator in your area has a set of gauges that
you could borrow. I'll post this to the group and hope for a response.
Even if you get your engine to just keep running on the ground the
adjustments called for in SID97-3E still have to be made to ensure a
properly running and safe engine before flying.
OC
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----- Original Message -----
From: <jfherzog@bluewin.ch>
Sent: Wednesday, March 03, 2010 5:11 PM
Subject: Re: KIS-List: KIS Engine Stoppage
Hello Owen
First of all, sorry for the delay of my answer, I've been very busy these
days
I would like to thank you about your interest regarding my fuel propblem.
I 've not progressed a lot so far, the only thing that I am almost sure is
the fact that my engine stoppage is
probably not due to a vapor lock problem because during the last engine run
, the engine stopped maybe 2-3 minutes
after start and temperature inside of the cowling was low and external
temperature was low as well.
In fact,it's like if the mechanical fuel pump is not strong enough and
sometimes fuel feed is interupted . Or maybe a
small external hole alomg the line allowing air to enter into the line
permitting fuel to return into the tank while
air is aspirated through the pump
I am making an instrument which should help me to determine depression that
fuel pump must provide to be able to feed
engine and check if during a periode of time I encounter some variations
with the depression , Thus would mean that
somewhere air is entering into the line.
I am also see if a chek valve between selector and engine fuel pump would
improve the regularity
That kind of problem is boring because it's difficult to identify and need
time and also chance.....
Best regards
JF
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