got a 1983 BMW 320i 201kmiles i bought 4 days ago and once i start it in the mornings its just fine but then after 1 second their is ticking or clicking it does it in park and in drive but once i shut the car off i get like a dieseling noise but the engine dose not shake but shuts off smoothly with the dieseling noise. its not miss firing it has a smooth idle it doe snot burn oil it still gets great gas millage its not affecting anything its just the clicking or ticking noise. i took it to a shop so they can listen to the engine to diagnose it and they told me the valves need adjusted so im getting that done.