Apr 252015
 

my chevy has 4.3 engine in it and i get the code po300 so what would your suggestion in finding the right problem

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  1. P0300 Chevrolet – Cylinder Misfire Detected Random Cylinders

    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 persist more tests needs to be done to diagnose problem, see “Possible Causes”.

    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

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