Roland

You need to check your PCV Valve when the smoke persist. This also can cause smoke and lose power ,maybe the valve stuck open or closed, you need to change it. Signs see inside your engine through the engine oil cap any signs of slug formed or inside the hose from the pcv valve to intake manifold any signs of oil inside. When you notice that change the valve. Then on pump d4 pump there are some fuel filter on the intake hose from tank that needs service