I recently added some block seal to the radiator because it was releasing white smoke from the tail pipe , after I added the block seal it worked fine for 2 weeks . I was driving it recently and it just stopped in the middle of the road , the motor wont turn by hand however if you start the car the engine will turn over one time and it just clicks after that, I was told it might be the oil pump but Im not sure I just replaced the fuel pump fuel filter and strainer I also replaced the starter and battery still nothing its like it's not getting enough power to start the engine . please advise,

Cars & Trucks - Oldsmobile - Toronado - 1991 Oldsmobile Toronado