Elevation changes while riding through the mountains

[Mainer40]

Hi y'all,

My bike uses a Honda GX 50 and I consistently go on long rides into the mountains from where I live (Phoenix). I have yet to push the bike past 2.5k feet in elevation because I fear the fuel mixture would become too rich and the engine wouldn't run right. There are some places around here like Flagstaff and hopefully the Grand Canyon eventually that I would like to ride to that are 6-8k feet above sea level, will my engine run? I don't have an adjustable carb. Would there be any harm in just trying and seeing how it goes other than fouling the plug?

I know this post is old but oil can make a difference with elevation if you live in a hilly area or higher elevation you will want to use Briggs and Stratton 10w30 synthetic small engine oil or mobil it will get you more hp regardless of were you operate and do not use the torch brand spark plug or Bosch use a champion or nk plug