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For ignition to occur you need three things:
Fuel
Oxygen
Spark
The fuel and oxygen need to be in mixture and appropriate ratio, and you need a spark. I have seen demonstrations of a lit cigarette tossed into a bucket of gasoline, and the cigarette goes out as tho the gas were water. The cooler the air and the colder the gasoline and it will take longer to vaporize sufficient fuel oxygen ratio to become volatile. Put an open bucket of gasoline in the warm sunshine, and strike a match near the bucket, or toss a lit match over the bucket and watch in amazement as the fuel explodes. Gas at a pump in a gas station is dangerous, and with risk, but not a bomb ready to blow without more help than somone smoking a cigarette in the vicinity.
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I don't always talk to liberal arts grads, but when I do, I tell them Big Mac and small fries!
1974 911 RUF Clone ('85 3.2; '86 915)
1974 914 ('87 3.2L & 915 transaxle)
2005 Boxster (Base car) Guards Red.
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