So this engine code article applies to Chevrolet, Ford, Nissan, Toyota, Dodge, Honda, GMC, etc.Basically this P0300 code means that the the car's computer has detected that not all of the engine's cylinders are firing properly.A P0300 diagnostic code indicates a random or multiple misfire...
the timing belts or chains could skip a teeth or two and the engine will run out of timing and result in misfire like behaviour you always have to check the camshaft ,crankshaft and the balancers (if equipped) that they alin at the right timing marks (if present) you can look up the ...