It sounds like something broken in it would that cause the problem if the oil filter missing ?
Yes. if you ran the car without a oil filter it was being run without lubrication. this subjects the crank and cams and pistons to incredible friction and heat. also, newer cars can have hydraulic valve lifters and timing belt tensioners. no oil means no oil pressure. no oil pressure means that those lifters aren't lifting and the tensioner is slack. you may have broken anything from a lifter to a piston rod or damaged the piston itself.
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