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Engine light is on, ran codes, came back with many codes: 1399:probable blocked EGR, valve clearance out of range P0300 Cylinder misfire; fuel system concern, ignition system concern, MAF sensor faulty,O2 sensor/air fuel ratio fault, blocked intake P0302, 303, 304; cylinder misfire probable cause...vacuum leak, ignition system concern, blocked fuel injector, engine machainical condition Where do I start> I was thinking EGR valve, but cannot find details on where it is/how to replace. Any help appreciated.

Answers from the Automotive Experts

Amanda J. Pierce, MBA Lisa, I recommend you have your sparkplugs and wires replaced, and possibly your O2 sensor.

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