if you put gas in the carburetor it will start and run fine. go to start it later and just cranks. replaced fuel pressure regulator still wont startRelated Questions98 blazer wont start after oil line blewi have a 98 blazer i was driving it last night and the oil cooler line blew and the check guages light came on oil pressure dropped to zero and the truck lost power and shut off.. i rolled it into a parking lot and…2002 4.3 chevy blazerBlazer wont start even after replacing the crank and the starterwont startMy 97 F-150 (4.6) won't start. replaced battery and still won't start. comp error states "camshaft position sensor", I don't understand. would this keep it from starting? and if so can I replace it?