Hey im planning on doing a good cleaning on the entire engine and when i was looking around planning everything this is what i found.

how can i clean the inside of the spark plug whole so i wont have to worry about anything falling into the combustion chamber.

what is that plastic piece underneath the throttle body (as you can see it all needs cleaning)

Close Up of the throttle body

Both valve covers are in need of HEAVY cleaning (i took purple power and engine degreaser and the grease is still hard to take off lol)