Precisely. Runs rough (assume it's the misfire) until it's run for about 15 and normal temp.

Maybe unrelated, but it's also only starts after the third try (sometimes sooner with full tank and cold start). . . I'm thinking fuel pump on it's way out.

 

OK, I remember this issue now (somewhat).

Have you checked on what is in that cylinder in the morning? Coolant or fuel?

It sounds like the typical presentation of a coolant leak into a cylinder.

 

Did an induction cleaning yesterday and it seems to have mostly cleared up. Also, it's not using coolant, so if it is that it must be a tiny trickle of a leak.

We'll see what happens when I put the magnacores in when they get here from Apex.

 

Oh...I though that had been done. In that case, scratch the leak diagnosis. You need to start with plugs and wires. A loose connector on a plug wire will absolutely do the same type of thing. Basics first, then we can panic.