Need Help with gy6 150cc engine!!

[Johnluke]

sorry i mean the right side

[Johnluke]

the bolts im talking about http://wiki.buggydata.com/images/2/29/A ... Manual.pdf

page 33

part 17

[Johnluke]

https://www.youtube.com/watch?v=rLZyWk6lUOE

the bolts he removes at 1:39

cuz what is happening is oil is leaking in between the piston cylinder and the valve cylinder at the bottom right

and it is dripping on the exhaust pipe and the smoking

so is it the bolts im talking about that is causing that to happen or is it something else