Engine Conditions

Written by: Guest
Written on: Fri Mar 18, 2005 4:43 pm
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Categories: MR2 Glossary

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[url=https://imoc.co.uk/app.php/kb/viewarticle?a=53&sid=7412593c8c6bae44089a0a9ace2e0de1]Knowledge Base - Engine Conditions[/url]
\Detonation\ is Pre Ignition which is auto ignition of the whole charge before the spark timing event. This is caused by Hot spots (plug electrode tips or sharp edges/burrs in the combustion area made by bad machine shops). Very bad, engine killer !!!

\Knock\ is the sound made by the COLLISION of multiple flame fronts caused by various reasons some of which are still not fully understood. Not the best !!

\Pinking \is caused by too much advance at low rpm and high loads. It\'s the sound of the piston rattling in the bore as peak cylinder pressure occurs at or before TDC, where piston pin, connecting rod and crank angle are less than ideal. Mostly harmless!