I just bought this car about a month ago for $350 with 18,000 original miles on it. I thought I was getting a good deal. I come to find out that there was no catalytic converter on it, so i replaced that, some spark plugs and the fuel injector. Now it is making this really loud ticking sound. It starts off kinda slow but gets louder and faster as i accelerate. I have about had it with this damn car if no one can help me. PLEASE HELP!