My valve taps until my motor gets warm how do i fix it

Ok! what valve taps??? egr valve ? or rockers (tappets) if its egr valve try cleaning it out, as there a real pain when the get dirty or stuck up,,,
if its rockers try ajusting them but if its only when its cold dont worry to much about them they will close up when they warm up,,,
if you can get away with blanking off the egr valve with out the car throwing a wobbely do it??? it will give you more power and better mpg,,if you can blank it off but it may turn on the engine maniagment light?? ,

Take it to a mechanic who can adjust the clearances.