Recently my 350-V8 overheated .Checking the raidiator I found all the coolant was gone. After letting the car set for a couple a days. when I started it and filled the radiator their was some loud knocking from the engine pouring a can of stp made it not knock as much.. However,the engine runs rough it has power when you step on it, but it like the plugs are fouled or wiring is wet if you know what I mean. Any suggestion or comments?
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