Originally Posted by Jeimuzu

My rc truck (Savage X SS) has been giving me hell with tuning. I suspected an air leak, but hadn't got around to checking.
Well today as I was trying to start the motor, I could hear air coming from the back of the engine. I take the engine off the chassis and using the method by Squirrelod, I check the backplate and exhaust manifold for leaks. No air coming out.
My next thought was an issue with the sleeve/piston. Maybe when it's warmed up there's a small air leak somewhere but not while it's cold.
Do I need to buy any new gaskets for anything before I take this apart or can I just put it right back together if there's no issue ?
Would I be able to tell if there was an issue with the sleeve while it's cold, seeing as how the problem comes up while it's hot ?