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  • #16
    Re: Caruretor

    Ray,

    That may indicate something. If the o-ring is bad it could cause fuel to leak by, (I think). If it is not in the locked position fuel can be drawn past the primer piston and fed through the primer nozzle into the engine. From what little experience I have when I looked at a disassembled primer it it a simple piece. (Can't tell that from the prices, though)! There is an o-ring on the piston and a check valve ball that opens when you pull the primer handle out to fill it. Then, the ball closes the primer intake line allowing the primer fuel to travel down the primer line to the nozzle in the engine's intake. Normally when you pull the primer out you wait for a few seconds to allow it to fill, you can sometimes hear it. Then you push it in. If you have to pump it to get any draw the o-ring may be tired. But still, Dave, brought up a good point that it could be coming through the primer. What you described is exactly what happened to me with my L-2's primer.
    Cheers,
    Marty


    TF #596
    1946 BC-12D N95258
    Former owner of:
    1946 BC-12D/N95275
    1943 L-2B/N3113S

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    • #17
      Re: Caruretor

      100 low lead and a little mogas alcohol free
      Live for today for we know not what tomorrow holds

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      • #18
        Re: Caruretor

        The primer certainly could be the issue.

        If you did nothing to the carb, then maybe the air bleed passages are clogged. A leaky needle and seat won't usually make it run rich, except sometimes at idle, unless it's leaking so badly it would be dripping all over the place.

        Does it puff black smoke at idle?
        John
        New Yoke hub covers
        www.skyportservices.net

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        • #19
          Re: Caruretor

          I am betting on the primer needing o-rings and/or not clsoing off the check valves.

          Easy test, disconnect the primer, be sure to plug all holes.

          I think if you had an 1/8" pip cap and plug you code take the primer injector out of the intake manifold and put the plug in there then put the cap on the primer injector.

          Dave

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          • #20
            Re: Caruretor

            Try Ted VanLandingham


            Terry Bowden, formerly TF # 351
            CERTIFIED AERONAUTICAL PRODUCTS, LLC
            Consultant D.E.R. Powerplant inst'l & Engines
            Vintage D.E.R. Structures, Electrical, & Mechanical Systems
            BC12D, s/n 7898, N95598
            weblog: Barnstmr's Random Aeronautics
            [email protected]

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