ORIGINAL: av8tor1977
TOM once said that the Walbro carbs were self compensating due to the very fact you mention I believe, up to about a 6000 foot elevation variance. I can't verify this personally, but TOM certainly knows his stuff....
As a norm however, an engine will need leaned out as altitude increases, and enrichened as altitude decreases.
AV8TOR
TOM is an authority whom I greatly respect. Do you suppose he was talking about self compensating for atmospheric pressure changes? Seems like a valid observation to me. Do you want to also sweep changes in temperature and humidity in that "quote"? I'll believe that when I hear it from TOM.
