Engine Knocking Noise problems of the 2004 Kia Motor Sorento

I purchased a 2004 kia Sorento in July 2004, had a few problems such as brakes wearing out too soon and things like that but the dealership was great to make the repairs at no cost. On may 13, 2008 while sitting out a stop sign in my neighborhood the engine began making a very loud banging noise and then stalled. The check engine light came on and my immediate fear was the engine had blown. I knew the oil and preventive maintenance service work had just performed and now the serento had 61k miles on it. I had a wrecker truck tow the serento to the bayway kia dealership (houston) which is where I had service work done before. The nice service manager named "joe' had the engine inspected and found the engine failed because of a item falling off the fuel injector into a cylinder, thus blowing the engine. "joe" advised the engine repair (replacement) would be covered under warranty because of a known defect. Now it has been 3 months, still no repair, bayway kia is now owned by a different company, thus "joe" is no longer there, and the kia dealership keep stalling on the repair. They only have one certified mechanic who has been snowed under with work. This entire week the certified mechanic is on vacation and twenty-five (25) cars in the repair shop waiting on him. . . Hummm. . . . They basically refused to allow me taking it to another dealership because they have the engine taken apart and ordered the replacement parts. What good is a 100k warranty if they keep the vehicle for months and months, while I still pay the finance company?.

After already replacing a crankshaft and a speed sensor in my 2004 kia Sorento ex, I am now experiencing a knocking sound under the hood. It usually starts while waiting for a stop light but also while driving down the road. My warranty is out and I can't afford to have it worked on at this point. Don't ever buy a used kia Sorento without checking carfax first!!!!.