HELLO IM A NEW BIKE OWNER GOT IT AT THE BEGINNING OF LAST SUMMER 2020, NEVER HAD A PROBLEM WITH THE NIKE ESPECIALLY WITH IT HAVING 57K ON IT. UNWINTERIZING IT HAS BECOME A PROBLEM THOUGH, I CHECKED ALL MY FLUIDS AND EVERYTHING IT LOOKED GOOD. IT FIRED UP AFTER A FEW MINUTES AND RAN FINE, I LET IT RUN FOR A COUPLE MINUTES THEN SHUT IT OFF AND WENT TO BED THAT NIGHT. WOKE UP THE NEXT DAY AND TRIED TO START IT AGAIN AND IT CRANKS SOUDS LIKE IT WANTS TO START THEN BACKFIRES HAS A WIERD NOISE FROM EXHAUST THEN JUST CRANKS AGAIN WITH NO FIRE......ANYTHING IM DOING WORNG OR SHOULD BE DOING????????