last night i was revving my motor and all of a sudden it is like someone pulld the plug on the car.. after looking at a few items on the car i took off the valve cover and i saw one broken retainer... so far what i know it is a jdm b16 motor...and it appears to have stock everything...what should i do next??

 

get a new retainer and put it back on. start it up and see if it damaged anything

 

is there any forums to how to do this??..i am trying to do this with in a few weeks because i live in spain and i go back to the states in a couple of months...