motor nock

my motor recently started nocking i have a 91 integra with a b18b motor i think it is the piston but im not sure do i really have to take apart the motor to see what the prob is???

i would do a comp test first.

how do i do that???

Also, you might check your oil, and see if there are little metal flakes in there. If there are metal flakes, then you probably spun a bearing.

go to autozone and rent a comp tester… and id also do the above…