Good Afternoon,
I currently have the P0300 code on my 2001 chevy blazer. It seems to idle normal, but when accelerating it likes to chug and sputter. This problem is not noticable one up to speed and warmed up. With in the last year i have had the spark plugs, wires, distributor, fuel pump, and fuel filter changed. I took my blazer to Firestone to do the sparkplugs due to a broken and arm and have noticed that they install Bosch plugs. Is it possible that these plugs are what is causing the code and missfire?

 

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