No compression #3 cylinder

[5280z]

I was checking out my new power since i installed my evoIII. I hit rev limiter and shifted. Car started sputtering. My exaust got real loud.I have zero compression in #3. poured some oil in the cylinder and it spit it back. My car has pretty high mileage. Could it be i floated a valve? If so is there an easy way to check besides pulling the head? Maybe some buildup? Im thinking of trying some BGK44.

 

[2.4 turbo Hyped]

Pull the valve cover to see if you dropped or bent a valve it should be very obvious.

 

[TurboDSM86]

have you thought about doing a cylinder leak down test? that might send you in the right direciton

 

[Defiant]

Most likely you've scorched a piston. Rebuild.