Cylinder 5 Misfire and 120408 code

[Tonyturnz]

Yesterday I drove to work and my car was running fine. When I put it in reverse to park it started misfiring and the drivetrain malfunction popped up. I scanned for codes on the spot and it said cylinder 5. I did plugs about 5k miles ago but didn't change the coil packs. When I got the car back home I installed a new coil pack but no luck. Afterwards I decided to swap plugs and coils around. Cylinder 5s plug was a little wet so I don't believe it's a fueling issue. I cleared the codes and once again I'm getting a cylinder 5 misfire code. Is there anything else I should check because I'm completely lost at this point.

Thanks in advance

[Raimo5]

Are there any other codes out of the view of this screenshot? To me it looks like misfires are a symptom not a cause and if there are no additional codes present then I would look into that last code 21A351. Is car stock or tuned?

[Tonyturnz]

Originally Posted by Raimo5

Are there any other codes out of the view of this screenshot? To me it looks like misfires are a symptom not a cause and if there are no additional codes present then I would look into that last code 21A351. Is car stock or tuned?

Did a compression test yesterday and cylinder 5 is reading zero. Looks like I'll have to get the motor rebuilt now. Going to check the cylinder walls next when my boroscope comes in.

[Raimo5]

Originally Posted by Tonyturnz

Did a compression test yesterday and cylinder 5 is reading zero. Looks like I'll have to get the motor rebuilt now. Going to check the cylinder walls next when my boroscope comes in.

Ouch, that's bad, but I hope not too bad. If compression is zero then I would put my money on busted valve. Is the engine tuned? Keep us updated with the findings.

[Tonyturnz]

Originally Posted by Raimo5

Ouch, that's bad, but I hope not too bad. If compression is zero then I would put my money on busted valve. Is the engine tuned? Keep us updated with the findings.

BM3 stage 2 tune, last oil change (which was my first one since I've owned the car) I found a small amount of metal in the filter also, that was before it was tuned. I boroscoped the cylinder yesterday and the wall is cooked.