loud knocking

[Ahmad88]

well yall wont believe this but i think a piston is stuck or sumthing else that is metal. i started my car about to leave, then all of a sudden it just shutoff, thinking the battery maybe crapped out i tried to start it again, it sounds like a piston is stuck or hitting something, i had to leave it at a gas station down the street, its still there now waiting to be towed back to my house.this better not be the 4th engine that crapped out on me, i hope i just need to replace a piston and maybe a port,hope i dont have to replace the block or something major. im starting to hate my supra ever since i got it, it has been a money sucker, gas guzzler, engine crapper. What my mom and i want to do is trade in a van that we have for 2 cars, i wanna get a used civic go safe and save gas!!