NHTSA Complaint #11234916 — 2012 CHRYSLER 300

5.7 HEMI DEFECTIVE LIFTER. THE 2012 5.7 HEMIS USED DEFECTIVE LIFTERS, HUNDREDS OF COMPLAINTS ABOUT THE LIFTERS FAILING CAN BE FOUND ON DODGE FORUMS ACROSS THE INTERNET. WHAT HAPPENS, IS THE ROLLER ON THE LIFTER THAT ROLLS ALONG THE CAMSHAFT IS PRONE TO LOCKING UP, IT THEN GRINDS INTO THE CAMSHAFT. THIS CAN LEAD TO MISFIRES AND CAUSE METAL FLAKES TO CIRCULATE THROUGH THE ENGINE VIA OIL. IF LEFT UNCHECKED, IT MAY ALSO LEAD TO A TOTAL ENGINE FAILURE. I HAVE SEEN COMPLAINTS OF THIS ON ALL CHRYSLER PRODUCTS THAT HAVE A 5.7L, DURANGO, CHARGER, CHALLENGER, RAM, AND JEEP AND FROM MY RESEARCH, I SEE THE BULK OF THESE FAILURES HAPPENING BETWEEN 80000 AND 120000 MILES, LIFTERS SHOULD NOT BE FAILING THAT SOON. IN MY CASE, AT APPROXIMATELY 160000 MILES, MAINLY HIGHWAY MILES, MY CHECK ENGINE LIGHT ILLUMINATED, I SCANNED THE VEHICLE, IT WAS THROWING A CYLINDER 5 MISFIRE CODE, SO I STARTED SMALL. FIRST I REPLACED THE SPARK PLUGS, I THEN TRIED SWAPPING IGNITION COILS TO SEE IF THE CODE WOULD FOLLOW THE IGNITION COIL, IT DID NOT. I THEN TESTED MY FUEL SYSTEM, THE PUMP, THE FUEL RAILS, AND THE INJECTORS, ALL WERE WORKING NORMALLY. FOR ONE LAST EFFORT, I CHECKED MY AIR FLOW SYSTEM, THE MASS AIRFLOW SENSOR, THE BAROMETRIC PRESSURE SENSOR, THE MANIFOLD ABSOLUTE PRESSURE SENSOR, AND OF COURSE THE AIR FILTER. ALL WERE WORKING NORMALLY. I THEN TOOK THE VEHICLE INTO A DODGE DEALER, THEY TORE THE ENGINE DOWN AND FOUND THAT THE LIFTERS WERE FAILING, AFTER $2,000 TO REPAIR THE LIFTERS, THE CODE STILL PERSISTS. I REMOVED MY VALVE COVER AND WATCHED THE LIFTERS AS A FRIEND TRIED TO CRANK THE ENGINE, THE CYLINDER 5 LIFTER IS NOT TRAVELING AS MUCH AS THE OTHERS, THIS TELLS ME THAT THE CAMSHAFT HAS BEEN DUG INTO BY THE FAULTY LIFTER THAT WAS REPLACED AND IS WHY THE NEW LIFTER IS NOT TRAVELING AS MUCH AS IT SHOULD. IT WILL COST ANOTHER TWO GRAND TO REPLACE THE CAMSHAFT. PLEASE INVESTIGATE.