My 2002 pontiac sunfire has a knocking rod. This has not yet went through the oil pan or whatever it does. I need to know what is the best thing to do? Is it worth putting the money into it to fix it? Do I need a new engine or is it possible to fix it an easier way? I just replaced the water pump, fuel pump and head. Costing me a fortune, also the radiator is brand new. What happenenend was I ran into a culvert and the insurance agency got it "fixed". After that it over heated again ans cracked the head. I replaced that and the water pump and eighthundred dollars later, the rod starts knocking. What do I do? Should I sell it for parts and get something different? HELP!