[Rasp]

I was driving my 93 Buick Lesabre 220 000 km down the highway when all of a sudden I noticed a rattle to the engine that I have not heard before.

At first I thought that maybe my exhaust was starting to come loose. But I then pulled the car over and opened the hood of the car. I revved the engine and I heard the rattle noise comming from what seems to be the internal workings of the engine.

I'm thinking it is possibly a piston that is damaged. Now I'm not a mechanic so I'm not sure if this is worth even trying to fix. The car will still start and run but it has that rattle sound to the engine.

If I was to get this problem fixed what would I be looking at for cost roughly?

I also have an electrical problem with this same car that cannot be duplicated when I bring it to a garage. It will stall intermittently and not start for 15 or so minutes. My problem is it won't happen when I take it to a garage. The electrical problem only happens about once a month or so.

Anyhow I could fix this one or I could buy a 98 LeSabre with 100 000 km for 4500 dollars. What would you do? What should I do with this current car if I do buy that one?