YS DZ 140 Problem

[don szczur]

If it runs well on the ground, and does not run in the air, isolated to fuel delivery.  After it lands try running onthe ground, hold up and check for air bubbles., tiny bubbles and Dave used to say in Huntsville...
  -----Original Message-----
  From: Isaac Najary <najary at netvision.net.il>
  To: discussion at nsrca.org <discussion at nsrca.org>
  Date: Saturday, May 24, 2003 2:36 AM
  Subject: Re: YS DZ 140 Problem


  Yes, Don
  I have 60 flights on the engine, I did'nt check the foam clunk, how does it hold during the time?

  Isaac
    ----- Original Message ----- 
    From: don szczur 
    To: discussion at nsrca.org 
    Sent: Saturday, May 24, 2003 4:59 AM
    Subject: Re: YS DZ 140 Problem


    You are using the foam clunk that comes with YS.?
      -----Original Message-----
      From: Isaac Najary <najary at netvision.net.il>
      To: discussion at nsrca.org <discussion at nsrca.org>
      Date: Friday, May 23, 2003 11:54 AM
      Subject: YS DZ 140 Problem


      Hi All,

      The problem started about 10 flights ago. I started to feel that on the lines up, the engine loses power.
      The situation got worse although all the needle set up I tried (I tried to make it richer and leaner).
      Today we had a contest, on the first round, when I did the P-03 figure 9, the engine stopped running on the top. 
      On the second and the third rounds, the engine stopped running immediately after take off.
      On the ground the engine worked OK, but when I got to the air, the engine stopped after a few seconds.
      I changed the plug, the fuel, tried to reset the needle valve and the ideal screw and it didn't help.
      Does anybody know what can be the problem?

      Please help.

      Isaac Najary, Israel

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