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  2. Spark plug - Wikipedia

    en.wikipedia.org/wiki/Spark_plug

    Spark plug with single side electrode An electric spark on the spark plug. A spark plug (sometimes, in British English, a sparking plug, [1] and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within ...

  3. Cold start (automotive) - Wikipedia

    en.wikipedia.org/wiki/Cold_start_(automotive)

    Diesel engines do not use spark plugs to ignite the air fuel mixture and rely only on the heat generated by compression alone to ignite the fuel. In extremely low ambient temperature diesel fuel can gel which can completely stop the fuel from flowing.

  4. Wasted spark system - Wikipedia

    en.wikipedia.org/wiki/Wasted_spark_system

    A wasted spark system is a type of ignition system used in some four-stroke cycle internal combustion engines. In a wasted spark system, the spark plugs fire in pairs, with one plug in a cylinder on its compression stroke and the other plug in a cylinder on its exhaust stroke. The extra spark during the exhaust stroke has no effect and is thus ...

  5. Don't Change Your Spark Plugs Without a Set of Spark ... - AOL

    www.aol.com/finance/dont-change-spark-plugs...

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  6. Firing order - Wikipedia

    en.wikipedia.org/wiki/Firing_order

    For this inline-4 engine, 1-3-4-2 could be a valid firing order.. The firing order of an internal combustion engine is the sequence of ignition for the cylinders.. In a spark ignition (e.g. gasoline/petrol) engine, the firing order corresponds to the order in which the spark plugs are operated.

  7. Is idling in your car bad for you? - AOL

    www.aol.com/lifestyle/idling-car-bad-080010463.html

    This can be bad for kids waiting for parents to pick them up or adults hanging outside a store. "The exhaust is coming out right at your airways and lungs," Randhawa points out. "In small doses ...

  8. Electric spark - Wikipedia

    en.wikipedia.org/wiki/Electric_spark

    A spark on a spark plug Lightning is a natural example of an electric spark. An electric spark is an abrupt electrical discharge that occurs when a sufficiently high electric field creates an ionized, electrically conductive channel through a normally-insulating medium, often air or other gases or gas mixtures.

  9. Why is sitting for too long bad for your health? What new ...

    www.aol.com/lifestyle/why-sitting-too-long-bad...

    Young adults in the U.S. reportedly sit about nine to 10 hours a day, compared to older adults, who sit up to 13 hours a day. And a lot of us know that sitting for long periods of time can be harmful.