Welcome Guest. Sign in or Signup

2 Answers

Vibrations/ loss of power on piston engine

Asked by: 3579 views Aircraft Systems

I fly piston aircraft installed with Lycoming IO-540-V4A5. I experienced engine vibrations followed by loss of power (subsequently engine failure with in 3-5 seconds). All the parts of engine were found SAT (no damage), except that there were marks of detonation/ pre-ignition in the cylinders/pistons. The engine was operated well with in the limits . What all could be the possible causes for this incident.

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.

2 Answers



  1. Nibake on May 08, 2015

    Sounds like a question for your IA, not a CFI.

    Was the mixture full rich? Is the engine driven fuel pump working? Boost pump? What airframe was it on? After a complete engine teardown no parts were found to be damaged?

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes



  2. Flying Instructor on May 09, 2015

    mixture was put to rich approx 1 minute prior to the incident. Aux fuel pump was on. engine driven fuel pump was found sat. the aircraft is super mushshak.

    0 Votes Thumb up 0 Votes Thumb down 0 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.