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Thread: Difficulties to start the engin on a C23

  1. #1

    Difficulties to start the engin on a C23

    My startup procedure: 76 C23

    COLD: (not run in past 4 hrs or more)
    Rotating beacon on, all other electronics OFF. (Beacon tells ground
    personnel MASTER IS ON, watch for start).
    Fuel pump on, get pressure up. Fuel Pump off
    Prime 4 to 5 times (5 for 40deg F or less, 4 otherwise)
    Mixture rich
    Hold throttle to idle, crank, when catches (1-2 prop turns) advance
    throttle to 1000 RPM.
    Avionics on, and other electrical switches as needed (NAV, landing
    light, etc).

    HOT
    Master On, Rotating beacon is always on (as above).
    Fuel pump on, pressure up, off
    NO PRIME
    Mixture Rich
    Throtte to 1/2 and back to idle and hold
    Crank and advance throttle when starts (1-2 prop turns).
    Avionics on, and other electrical switches as needed (NAV, landing
    light, etc).
    BILL

  2. #2

    Difficulties to start the engin on a C23

    >My partner, who has been owning this airplane for a while seems to be
    >having more difficulties with startup. He has unfortunatelly often been
    >stuck on the ground with an empty battery & possibly flooded engine at
    >initial start up or after a short stop in a remote airport. From
    >discussions I had with him,
    >the only difference on the procedure is that I turn on the Fuel Boost
    >prior to priming the engine and during startup where he doesn't.
    >Would this fuel boost make a big difference while priming or during
    >engine crank? I also normaly prime only enough to make sure that I
    >have 2 or 3 good fuel push (3 to 5 prime actions). I believe that he
    >primes around 8 times (prime actions).
    >
    >Is Fuel Boost the key?

    I think you have found the problem in his excessive priming. The boost
    pump does not do anything except pressurize the fuel lines from the pump to
    the carburetor. It is in no-way connected to the primer in a carbureted
    engine.

    >What about priming while cranking the engine?

    Great idea if you have 3 hands. <G>

    It should not be needed. Pumping the throttle while cranking is also not a
    good idea.

    Bob Steward, A&P IA
    Birmingham, AL

  3. #3

    Difficulties to start the engin on a C23

    I bought my 78 Sundowner from a fellow in Port Angeles, WA - sea level. He told me 8-10 primes for cold start.... 2-4 primes for warm start.

    Here at 5670' on the ground I've experimented a bit with different numbers of primes but even at my altitude, the 8-10 and 2-4 always seem to work the best.

    -Rick


    -----Original Message-----
    From: musketeermail@yahoogroups.com [On Behalf Of kmuller909
    Sent: Wednesday, January 17, 2007 2:10 PM

    When I bought my C23 in Oklahoma City, the prior owner said 5 primes
    is just about perfect every time. Well, it can get a lot colder here
    in the Northeast where the plane is now, not to mention the fact that
    he had a hanger and I tie down outside.

    So once cold set in I started to have hard starts. Went thru the POH
    and was surprised to find in the POH - "Cold weather start - 8 to 10
    strokes of the primer as needed". If I didn't read it with my own
    eyes, I would have considered that way excessive.

    This made all the difference. So now my procedure is to vary the
    prime from 5 to about 8 depending on how cold it is. Pressurize the
    system with the fuel pump, crack the throttle and it starts right up
    every time.

    --- In musketeermail@ <mailto:musketeermail%40yahoogroups.com>
    yahoogroups.com, "stephanemerrette"
    <stephanemerrette@...> wrote:

    Hello Beech fans.

    I have recently purchased a share of a Beech Musketeer C-23 1971
    back in August 2006. I have now close to 20 hours on it. Being in Canada the OT often goes bellow freezing point and sometimes well under freezing. Our plane is in a hangar with a engine oil warmer.
    Normally when we start in the winter, the engine is warmer than in the
    summer. I have up to now never run into any start-up issues. Engine starts on the first or second crank. My partner, who has been owning this airplane for a while seems to be having more difficulties with startup. He has unfortunatelly often been stuck on the ground with an empty battery & possibly flooded engine at initial start up or after a short stop in a remote airport. From discussions I had with him, the only difference on the procedure is that I turn on the Fuel Boost prior to priming the engine and during startup where he doesn't.

    Would this fuel boost make a big difference while priming or during engine crank? I also normally prime only enough to make sure that I have 2 or 3 good fuel push (3 to 5 prime actions). I believe that he primes around 8 times (prime actions).

    Is Fuel Boost the key?

    What about priming while cranking the engine?

    Thanks
    steph

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