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  1. #1
    Bass1's Avatar
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    Dec 2002
    Va.Beach, VA
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    ZDZ 40 carb trumpet?

    Hi Mike, I have 2 questions for you. I have a used ZDZ 40 RV that I bought and was told it had a "few gallons" of run time. The engine runs great although I believe it is still running rich. It ran so good that I left the needles were they were set by the previous owner thinking it still needed breaking in. I just ordered a carb trumpet from you all in hopes that it will help keep the carb from spitting as much in my fuse, Will this help? Also, I'm using Mobil 2 T racing oil at 40:1 and am getting alot of spitting fuel/oil(black goo) out of the muffler and on the airplane. Should I start to lean this engine out now and is the mess normal? I've put a couple more gallons through it. Thanks in advance (7250 rpms with 20/8 NX prop)

  2. #2

    RE: ZDZ 40 carb trumpet?

    better to keep it rich than burn it up leaning it out. A trumpet will help with fuel spit back.
    Mike Dooley
    RC Showcase

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