Sure you have a good case but you need to show knowledge or reasonably should have know declaration by mechanic under penalty of perjury stating that, cost of repairs, proof of purchase price. Check if your state has any Lemon Law statutes for car sales. If the amount you paid is less than the cost of repairs the judge might only award the lower amount. The Court can only award money and can not order that the prior owner make the repairs. Make a demand on the seller for a specific amount of money. There are at least two books I know of about how to win Small Claims cases in California go to your local public library.
Answered on Sep 15th, 2015 at 5:19 PM