Kempo

Please can someone explain to me (in simpleton speak) what exactly the ignition advance language is all about.

I have read numerous threads like "with lower octance fuel the ignition must be retarded" or "it can advance the ignition" and also some more technical terms like "subaru recommend 7 degrees above top dead centre" etc.

I would really love to know what this refers to in terms of the engine. Thanks as always in advance.

Paul

Mike Tuckwood

While the source information is clearly related to motorcycles, have a read of the basic info in this link. http://www.hdcycles.com/timingrev.htm Ask additional questions if that makes sense. It gets VERY complex after this.

Mike.