I cant figure this one out for the hell of me.

heres what I've done so far:

-spark plugs
-wires
-coil packs
-moved the injectors

When at low idles cylinder five miss fires, when at 1200+rpm there are no more miss fire counts on the graph from my diag tool.

What next?

 

Get a cheap boroscope and look inside the spark plug hole on 5. Look for any bubbles around the head gasket joint. If there are bubbles or signs of coolant you have a failing block. If there are none, you've ruled that out. Do this while the cooling system is still pressurized while the engine is still fairly hot.

 

Also do it the next day after it has cooled down. When the engine is hot and it's just been running the coolant can all be burned out but if you let it sit in the cold it might sweat into the cylinder and you'll find it the next day

 

For anyone who cares this turned out to be an external head gasket leak into the valley. Exhaust gasses were blowing by. No coolant leaks or other heating.