i need to jump in garage in the am to c wht the hell i done just got ther car towed home was out cruising today and the car shut off on me ,i was already working with a non reliable walbro pump and and told my self not to drive but my temptation got the best of me and drove anyway .on the way back HOME CAR JUS SHUT OFF not getting any fire so now i need to c if its the crank sensor or timing chain hope the sensor wht should i check 4 first?????