[Tom Wells]

Stephan,

If you are serious about learning A/F ratios for various load/speed combinations for an engine, you're embarking on a real "learning experience." Use internet searching to the fullest and don't make any changes until you really understand the entire concept.

Idle mixtures are one small part of the tuning process, and whatever you do can and will affect the whole spectrum of engine performance.

There's a kind of old saying about tuning that goes something like this: the engine can run rich for quite a while at almost all loads and speeds, but only once if it's too lean.

Factor in today's liquid that some laughingly call gasoline and you'll find tuning tweaks are needed to compensate for the changes there, too.

Have fun learning!

Tom