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<p>[QUOTE=&quot;-jeffB, post: 2581416, member: 27832&quot;]What.</p><p><br /></p><p>First of all, there&#039;s no &quot;flame&quot; igniting gas vapor in an engine cylinder. Yes, the effective temperature of an electric spark is <i>hotter</i> than a &quot;flame&quot;, but it&#039;s <i>not</i> a flame.</p><p><br /></p><p>Second, I&#039;ll take <a href="https://forums.firehouse.com/forum/fire-prevention-investigation/fire-investigation/89318-hot-surface-ignition-of-gasoline-vapor" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://forums.firehouse.com/forum/fire-prevention-investigation/fire-investigation/89318-hot-surface-ignition-of-gasoline-vapor" rel="nofollow">the word of professional firefighters and their reference documents</a> over an unsupported claim.</p><p><br /></p><p><br /></p><p><br /></p><p>Is an ember from a cigar or cigarette hotter than this? <a href="http://www.physlink.com/education/askexperts/ae1.cfm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.physlink.com/education/askexperts/ae1.cfm" rel="nofollow">You bet.</a> If you <i>drop</i> a cigarette into a <i>puddle</i> of gasoline, it <i>might</i> just go out -- but it might not. Drop it into a bucket of gas-soaked papers, with enormous surface area and low effective specific heat, and you&#039;re virtually guaranteed a bad surprise -- at least if you&#039;re following misguided advice like this.</p><p><br /></p><p>I guess I should apologize for jacking my own thread, but I <i>won&#039;t</i> let a <b>dangerously false</b> assertion like this go unchallenged. Please don&#039;t encourage stupid behavior.[/QUOTE]</p><p><br /></p>

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