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Why Is Black Smoke Coming From The Back Of My Tail Pipe And Missing. The Engine Code Is po300

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The Enigine Is Missing And Black Smoke Is Coming From The Tail Pipe.

Vehicle: Year:2000 , Model: Gmc, Make: Donata ,Engine Size:5.7

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The P0300 code means that one or more cylinders are misfiring. You could start by changing the spark plugs. If the problem persist you may have a problem with an ignition coil or fuel injector.

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