Talk:Back-fire

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Clarification of a lean backfire A lean backfire typically occurs in the intake manifold when an engine is being operated moderate or heavy load. "Lean" is defined as an air fuel mixture that has insufficient fuel for a given amount of oxygen. The same thing can be written from the opposite perspective, "Lean" means that there is too much oxygen(collouquially "air") for a given amount of fuel.

This ability to express the same idea from two different perspectives occasionally leads to accidental mis-statemments. 210.239.48.38 10:15, 8 September 2005 (UTC)3sgte

An intake leak will result in a lean condition, not a rich condition like the article states. The manifold is under vacuum, so a leak will suck air in from the outside 68.250.246.149 07:22, 30 May 2006 (UTC)

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