Today's Message Index:
----------------------
1. 05:51 PM - Re: uneven EGT's (Allan Maxwell)
2. 06:06 PM - High indicated fuel flow with fuel pump on (Bill Strahan)
Message 1
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| Subject: | Re: uneven EGT's |
Hi linda just wanted to give and up date to high egt's I changed the o ring
s on the manifold and rotated the carb slightly to the right looking from t
he tail forward of the plane. I had egt's- wireing problems must change a
fter 4 years . I will change the carb jets in a couple of- days will let
you know Allan Maxwell
--- On Wed, 11/18/09, JOSEPH MATHIAS LINDA MATHIAS <lbmathias@verizon.net>
wrote:
From: JOSEPH MATHIAS LINDA MATHIAS <lbmathias@verizon.net>
Subject: Re: Lightning-List: uneven EGT's
Tex,
--- You were lucky; rotating the carb made very little difference on
my EGTs.
-
Linda
----- Original Message -----
From: Tex Mantell
Sent: Wednesday, November 18, 2009 6:48 PM
Subject: Lightning-List: uneven EGT's
Nick, I also had a uneven egt on number one (1) . I rotated the carb about
three degrees and problem gone. I use the normal scat tub between the air b
ox and carb. All EGT's are now within 45 degrees.-- Tex
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Message 2
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| Subject: | High indicated fuel flow with fuel pump on |
I've been fleshing out my checklist and recently decided to add turning the fuel
pump on for takeoff and landing. I'm used to that with my Grumman, and it felt
natural to do it that way.
Today I took off using the new checklist, and once I was a few miles from the airport
I noticed my fuel flow was 11GPH! I've never seen anything near that high
and my fuel flow already was reading about 10% too high.
I throttled back to a setting that typically shows 4.5-5 gph and was seeing 7.
For a moment, I pictured a fuel leak and decided to turn the boost pump on and
see if the fuel flow surged, which would confirm a leak on the firewall side,
and I was going to immediately return to the airport.
Instead I realized I had left the boost pump on since takeoff and then I wondered
if that was the cause of the high reading. Sure enough, with the boost pump
off the EIS indicated 5.1 gph. Boost pump on and it jumped back to 7 or so.
I was pretty sure I didn't have a fuel leak at that point, so left the pump on
for a half hour or so while I flew. I saw a growing disparity between what the
totalizer thought I had left and what the tanks were indicating, confirming
to me that the indication is all that was changing, I wasn't pumping fuel overboard.
So, anyone else noticed the same thing? I would have thought the flow sensor would
have been independent of fuel pressure, but that appears to not be the case.
Bill
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=274827#274827
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