i heard a knocking sound from the engine when i accelerate or turn from slow to fast not when going fast
what is it ?how can i fix it?

 

If a knocking noise is coming from the engine then either you need a rebuild or need to back off your timing/run higher octane fuel. Since it happens when you turn I'm guessing that it isn't coming from your engine. Is it more of a clunking sound coming from beneath you? If you rev the engine in park, can you hear the sound?

 

if im in parking it doesnt but its only on accelerating and cornering while accelerating at low speeds
maybe the spark plugs