A spark plug has a metal threaded shell, electrically isolated from a central electrode by a porcelain insulator. The central electrode, which may contain a resistor, is connected by a heavily insulated wire to the output terminal of an ignition coil or magneto.
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The White House responded to Donald Trump keeping 1,000 jobs in the US by dropping a huge fact bomb that showed just how little Trump has accomplished compared to President Obama. The Hill reported that Press Secretary Josh Earnest said that the White House was pleased that the jobs were staying, then he added: