What is the difference between Detonation and Pre-ignition?

Detonation is when the fuel/air mixture burns all at once in the cylinder as opposed to slowly starting from the spark plug. It can occur when the engine is running too hot, when running low octane fuel, or when running too high a manifold pressure for the RPM. The symptom are engine roughness, vibration, or loss of power. Pre-ingnition is when the fuel/air mixture is igniting before the spark plug sparks. This usually happens when small accumulations of lead or carbon build up on the piston head, or commonly, on the spark plug. These accumulations heat up and ignite the fuel/air mixture out of sequence, usually during the compression stroke. The symptoms are lack of power and engine roughness.

A Canadian Piloting Resource.

Home

FLog
- Recent Posts
  Jamie2024-12-10T11:33:46-05:00
  Bush Flying Content in the Canadian North
  Jamie2024-12-10T11:33:46-05:00Bush Flying, Float Planes, News, YouTube|0 Comments
  Jamie2024-02-09T15:16:54-05:00
  Altimeter Setting Regions
  Jamie2024-02-09T15:16:54-05:00Fundamentals, Rules|0 Comments
  Jamie2024-02-09T12:29:59-05:00
  Understanding the Design of the Wing
  Jamie2024-02-09T12:29:59-05:00Aerodynamics|0 Comments
  Jamie2024-02-08T18:18:44-05:00
  Essential PPL Words and Terms for Your Aviation Journey
  Jamie2024-02-08T18:18:44-05:00Education|0 Comments
  Jamie2024-02-08T17:18:27-05:00
  Who Has the Right of Way in an Airplane?
  Jamie2024-02-08T17:18:27-05:00Rules|0 Comments
  Jamie2024-02-06T14:05:40-05:00
  Airplane Minimum Equipment List Day VFR
  Jamie2024-02-06T14:05:40-05:00Education, Rules|0 Comments
  View ALL
Licencing
- Licences, Permits, & Ratings
  Student Pilot Permits
  Recreational Pilot Permits
  Private Pilot Licence
  Commercial Pilot Licence
  Night Rating
  VFR OTT Rating
  Instrument Rating
  Multi Engine Rating
  Seaplane Rating
  Type Ratings
- Instructors, Recency, & Medicals
  Flight Instructor Classes
  Flight Instructor Renewals
  Basic Recency Requirements
  Pilot Medical Requirements
Quiz
- Random Aviation Knowledge
  
  What is the difference between Detonation and Pre-ignition?Jamie2020-10-29T11:19:45-04:00
  What is the difference between Detonation and Pre-ignition?
  Detonation is when the fuel/air mixture burns all at once in the cylinder as opposed to slowly starting from the spark plug. It can occur when the engine is running too hot, when running low octane fuel, or when running too high a manifold pressure for the RPM. The symptom are engine roughness, vibration, or loss of power.
  
  Pre-ingnition is when the fuel/air mixture is igniting before the spark plug sparks. This usually happens when small accumulations of lead or carbon build up on the piston head, or commonly, on the spark plug. These accumulations heat up and ignite the fuel/air mixture out of sequence, usually during the compression stroke. The symptoms are lack of power and engine roughness.
  
  View All
Forums
- Topic Categories
  
  General Questions and Comments
  
  Pilot Jobs
  
  Buy and Sell
- Recent Forum Topics
  
  RAM Tab-Tite HD For Sale
Login

Aircraft Preparation

Sale!

View Cart

Add to cart / Details Quick View

Familiarization and Preparation for Flight

Original price was: $3.00.Current price is: $0.00.

Knowing the different parts of an airplane and systems of an airplane can save your life in an emergency situation and doing a proper inspection of the plane before flight can mitigate these emergencies all together!

Free Aviation English Course

Bush Flying Content in the Canadian North

Altimeter Setting Regions

Understanding the Design of the Wing

Essential PPL Words and Terms for Your Aviation Journey

Who Has the Right of Way in an Airplane?

Airplane Minimum Equipment List Day VFR

Random Aviation Knowledge

What is the difference between Detonation and Pre-ignition?

Topic Categories

Recent Forum Topics

Aircraft Preparation

Familiarization and Preparation for Flight

Title