JabiruEngine-List Digest Archive
Sat 01/27/18 |
Total Messages Posted: 1 |
Today's Message Index:
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1. 01:04 PM - Fuel Pressure (BobbyPaulk@comcast.net)
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Time: 01:04:07 PM PST US
From: BobbyPaulk@comcast.net
Subject: Fuel Pressure
Hope some of you Jabiru gurus are still lurking on the list.
I have 292 hrs on my 3300. Over the last year the fuel pressure has slowly dropped.
At Cruise it is 1.8 steady but will sometimes dip to 1.1. At run up ( 1200 to 1700
) it will vary between 1.0 and 2.3.
It is very unsettling to get a low pressure alarm on takeoff roll even with boost
pump on it drops to .9 at times. I have recently dropped my low pressure alarm
from 1.5 to 1.2. It will usually come back up to 1.8 after throttling back
to about 2700 rpm.
The electric fuel boost pump is only 3 yrs old but the engine pump is original
11 yrs old.
Is there a time recommendation for changing out the engine pump and / or the boost
pump. The boost pump was bought at NAPA.
The engine fuel pump I believe is BCD1875 modified by Jabiru.
Electric boost pump is Facet FAC40105. Should be 3 to 4.5 psi.
My fuel pressure transducer is 0 to 60 psi. and I am wondering if that could be
all of my problem.
Dynon recommends 0 to 10 or 20 psi.
Any help will be greatly appreciated.
Bobby
Coming up on age 80
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