Please Help Need Advice on A car situation?

well any time you buy a used car you must check it for problems before paying but once you drive it away its yours cant do anything really but make repairs and keep paying for it dont pay and you lose car and still owe money and will be harder to get another without cash.. so best to find a good shop to check and make repairs and next time when you go to buy a car follow a few steps in looking for problems no you just cant leave it