2007 Porsche 997 Turbo - P0305 failure

[Raptors Motors Force]

2007 Porsche 997 Turbo - P0305

I have a problem in a 2007 Porsche 997 turbo.

You walk with the vehicle about 40 minutes, and he accuses check engine. The code that shows the diagnosis is P0305. I have changed the game of spark plugs and ignition coils, but did not solve the problem. When I took the spark plugs, just the # 5 cylinder had a grayish color, while all others were with the color orange.

I would like to hear from you one of what could be done to solve the problem.

Thank you.

[JFP in PA]

If the plug in #5 is not bad, it is probably either the coil pack or the coil pack connector. Try moving the suspect coil to another cylinder, if the code moves with it, you need a new coil.

[Raptors Motors Force]

I have changed the ignition coils, but the problem remains the same. Initially, he even changed the coil # 5 with # 4 to see if changing the default, but still remains the same.

[JFP in PA]

Run a leak down test on the bad cylinder to see if there are any mechancial issues (bad valve, head gasket, etc.)................