Welcome Guest. Sign in or Signup

1 Answers

Leaning the Mixture – Peak EGT

Asked by: 3328 views
Aircraft Systems, Commercial Pilot

I read the statement below and I want someone to explain, in a simple way, what does't exactly mean: "...the best power mixture is obtained by leaning the engine to 100 deg F on the rich side of peak EGT. This setting will give you the most forward speed at any throttle setting"

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

1 Answers



  1. Nibake on Nov 22, 2014

    I means just that, find the peak EGT, that is, the hottest. Then enrich the mixture until your EGT is 100 degrees cooler than peak. How you perform this is going to depend on what airplane you have and what gauges are available to you.

    0 Votes Thumb up 1 Votes Thumb down 1 Votes


The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.