Well I was referring to the exhaust ports themselves which should be black. The last time I looked at the plugs they all looked alright.
That I am well aware of.
I was considering checking egts but I would first need to get my hands on one.
Compression test is good, leakdown test is good. Pressure tested the intake from the turbo to the engine and everything looks ok. Injectors are even, all three sets. Again, plugs were pretty much perfect, the exhaust ports were what I was referring to. Really Im rather surprised that the plug looks good but the port does not.