2012 BUICK REGAL Fuelpropulsion System Problems

I GOT A 2012 BUICK REGAL I BROUGHT IT JULY 2018 MY CAR WAS DIED OUT OF NOWHERE ABOUT 5 MONTHS PRIOR LIST AND THEN AFTER I CHANGED MY OIL MY CAR DIDN'T GO ANYMORE IT SOUNDED LIKE A CHAIN THE FIRST NIGHT AFTER THEY CHANGE THE OIL AND THEN THE NEXT DAY I DROVE IT FOR 2 HOURS I DON'T KNOW IF THE TIMING IS OFF OR WHAT

SINCE I PURCHASED AND DROVE OFF FROM THE DEALERSHIP, WITHIN THE FIRST FEW DAYS THE CAR SHUT DOWN ON ME WHEN I WAS IN A DRIVE THRU, AND IT HAPPENED TIMES AGAIN WHILE PULLING OUT A PARKING SPACE AND DROVE A FEW FEET AWAY THE CAR WOULD SHUT OFF AND BEGAN SMELLING OF GAS AS WELL OVERTIME I DROVE IT. THE DEALERSHIP WAS NOT VERY HELPFUL BUT FINALLY KEPT MY CAR A FEW DAYS AND SAID IT WAS ONLY THE HOSES WHICH WERE LOOSE. NOW 4/24 MY CAR AGAIN IS MAKING WEIRD NOISES SINCE LAST WEEK AND ACTUALLY WILL NOT START THIS EVENING AFTER BEING OUT AND PARKING IN A LOT.