Hello, I have a 1980 Datsun 280zx. Car has good compression, fuel pressure, and oil pressure. I put new spark plugs, wires, distributor cap and rotor. Still getting tons of white smoke out the exhaust and even more when I give it gas. Changed oil and it came out grey like clay. New oil is still a funky color and smells like gas. Car fires right up every time, It has cut off once after it warmed up other than that no issues turning and staying on. I haven’t drove it only had it idling outside a few times and it killed 5 gallons of gas. Possible fuel injection problem?? Or valves need to be adjusted?? Not sure what to do next.