CJB22

Hey everyone. I did a valve adjustment over the weekend and right after i got everything back together and started the motor, there was a loud ticking. Its coming from the exhaust side between cylinders 1 and 2. I have taken it all apart again and double checked that everything is tight and the valves are still in spec. When I turn the engine with a wrench, it makes no ticking whatsoever. I have no clue what is going on. Thanks for any help.