Ignition timing: It is the exact instant when a spark is sent to the spark plug and is expressed in degrees of crankshaft rotation relative to TDC. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostIgnition module Next PostIndicated Power (I.P.)