My 2008 sonata limited 3.3. Liter engine is saying I have to misfires my car sat up a year cause I couldn't afford to fix it I canged the spark plugs a coil pack it's like the engine wants to jump ou

Asked by Apr 16, 2017 at 02:11 AM about the 2008 Hyundai Sonata V6 Limited FWD

Question type: General

1 Answer

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"it's like the engine wants to jump ou"?? P0300 HYUNDAI - Random/Multiple Cylinder Misfire Detected...Possible causes; Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s), Intake air leak, Fuel injectors harness is open or shorted, Fuel Injectors circuit poor electrical connection, Ignition coils harness is open or shorted, Ignition coils circuit poor electrical connection, Insufficient cylinders compression, Incorrect fuel pressure...The P0300 code means that a cylinder(s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persists more tests needs to be done to diagnose problem...There is a factory service bulletin for this car, The bulletin provides information on how to inspect and diagnose problems related to the Oil Control Valve (OCV) used in Constant Variable Valve Timing (CVVT), if at any time the OCV is suspected as the caused of rough idling, poor acceleration, camshaft timing misalignment-related trouble codes, misfire-related trouble codes. Bulletin: Hyundai Constant Variable Valve Timing Oil Control Valve Inspection... www.autocodes.com/uploads/hyundai/09-EM-002.pdf

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