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recapen(at)earthlink.net
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 Posted: Thu Mar 30, 2006 3:55 pm Post subject: Fuel Primer with injection system |
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Is it really necessary?
How have some of you done it?
I'm thinking that there are two major possibilities:
Tee from the fuel selector valve to the boost pump (non pressurized side) to a Cessna type pump-knob to three of the four cylinders (fourth for MP?).
Solenoid from pressurized side to single line with three outlets for three of the four cylinders (fourth for MP?).
Pictures, descriptions, parts lists would be appreciated.
Ralph Capen
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brucebell74(at)sbcglobal.
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| Posted: Thu Mar 30, 2006 4:06 pm Post subject: Fuel Primer with injection system |
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NO! It is not necessary. Page 3-3 in the O-320 Operators Manual has the start procedure for fuel injection.
Bruce Bell
N23BB
RV-4
[quote] ---
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recapen(at)earthlink.net
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| Posted: Thu Mar 30, 2006 4:20 pm Post subject: Fuel Primer with injection system |
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Thanks - same place in my 360 manual.......
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dan(at)rvproject.com
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| Posted: Thu Mar 30, 2006 4:37 pm Post subject: Fuel Primer with injection system |
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Imho, primer is a liability on an injected engine, rather than any sort of
benefit. The nice thing about injected engines, at least the Lycomings I'm
familiar with, is that you can prime the engine with the injection system.
You already have a direct means of feeding fuel to the cylinders. There is
no need (imho) for a dedicated priming system on an injected Lycoming. Just
more stuff to buy & more stuff to break.
It never gets old, how quickly my engine (IO-360-A1B6 + Slick IC + Plasma
II) fires up when cold. Cold starting an injected engine, particularly with
electronic ignition, don't blink, you might miss it! 
)_( Dan
RV-7 N714D
http://www.rvproject.com
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