Pre-ignition Pre-ignition Pre-ignition (or preignition) in a spark-ignition engine is a technically different phenomenon from engine knocking, and describes the event wherein the air/fuel mixture in the cylinder ignites before the spark plug fires. Pre-ignition is initiated by an ignition source other than the spark, such as hot spots in the combustion chamber, a spark plug that runs too hot for the application, or carbonaceous deposits in the combustion chamber heated to incandescence by previous engine combustion events. The phenomenon is also referred to as 'after-run', or 'run-on' or sometimes dieseling, when it causes the engine to carry on running after
Blockquote element languages, the semantics and effect of HTML codice_6 is different from the use of an initial colon in a paragraph, which may be translated into an HTML codice_13 element enclosed within a codice_14 element. (That is a "data definition" within a "definition list", without there being any preceding "data term" or codice_15 element). Blockquote element In HTML and XHTML, the blockquote element defines "a section [within a document] that is quoted from another source". The syntax is codice_1. The codice_2 element is used to indicate the quotation of a large section of text from another source. Using the default HTML