what's the reason my 2001 has clicking sound by the engine? on 2001 Mazda Tribute

this clicking is present every time I start the engiene (cold, It disappears after been runnibg for a little bit. I had check iol levels, add some MOA, and even change fuel, it kinda helped, but still there. Any idea or advice?

Thanl you

2 answers
could be a cam follower it going bad or several other issues
See TBS # 0104304 5-1-05. Read article at this web site; http://www.enginebuildermag.com/Article/99389/mazda_30l_engine_ticking_noise_from_left_bank_cylinder_head.aspx