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carburator -mixture check

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dave:
:cry:
  hi guys...,
      the info i need is ..what should be the EGT lean /peak  range when checking the mixture on the CARB ( on the ground)..like when it is newly installed..
  my egt  readings are actually jumping up and down...ERRATIC and altitude or rpm has very little effect   on it...the engiine does change sound ..a little....
  its not the egt gauge...i already swapped .....
   it might the mixture needle or jet....changing settings...
   so if someone...knows what the correct "MIXTURE' adjustment./ precedure..is.....welll  thank you  :lol:

Anonymous:

--- Quote from: "dave" ---:cry:
  hi guys...,
      the info i need is ..what should be the EGT lean /peak  range when checking the mixture on the CARB ( on the ground)..like when it is newly installed..
  my egt  readings are actually jumping up and down...ERRATIC and altitude or rpm has very little effect   on it...the engiine does change sound ..a little....
  itl:
--- End quote ---


I don't check my EGT readings on the ground.  Your want a smooth running motor during your mag check.  Then check your max static RPM either stopped or on the takeoff roll.  As your temps, pressures, and mags check out.  EGT is more for leaning airborne.  I don't have a fuel flow gauge on this bird, otherwise would include it.

Ain't no hard and fast numbers for an EGT range.  I can drop 200 degrees in EGT from 4,500' at 10,500'.

Now when I lean,  I pull the mixture back till she stumbles some, check EGT and then add a lil rich mixture to drop her 20-40 degrees and it feels like its ripping along.  Leaning in small birds is one of those touchy feely things you have to develop.

If your motor is running pretty smooth, temps and pressures are pretty stable.  Ain't sure you got much of a problem.

Good luck;

Jack

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