well i just got my car back from the dealer after replacing all 16 valve lifters, the knocking is pretty much gone, just a little bit but im assuming thats normal of the cam shaft hitting the valves...plus all these cars sound like diesals anyways, but the dealer covered half of the bill so i was out the door for 695, and they replaced all the coolant, oil, some gasket, and they broke my cam shaft breather tube which they replaced and charged me 4 bucks for it...i bought a new serp belt last night one of those gator belts which i had on my old car and really liked it, possibly plugs in the next few hundred miles or so, so after this on to the brakes and then get the windows blacked out...and obviously system back in...