'89 XT600 Engine Noise
 

The Bike has under 5000 miles and i have just gotten it running after about 7 years of sitting, but there is a nasty engine tap. i adjusted the valves and no change. I took out the cam chain tensioner and it appears to be working fine. Can anyone help me out with this, as in what i should look for on the tensioner or other problem places.
Thanks
Toddd