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Well I took a couple of hours off work and pulled the plugs.
The two front plugs are pitch black with soot - so firing, presumably with too much fuel. It was one of these that I used to test that the car had spark back on day one.
One of the others from each side is almost completely clean and smelling of fuel - so not firing and has fuel.
The remaining two, one from each side, are what I'd call normal.
I did a quick test on the coils with a Ohm meter and they are all the same. The two outside terminals have zero resistance, and no other pins registered infinite resistance. That seemed odd, but they were all the same so I'll take some more time soon and check spark swapping out each coil one at a time on the one cylinder that I can see while cranking the car. If they are all firing when connected to that plug, I'll move my testing to one of the other plugs.
I'm somewhat encouraged as if the car has two cylinders not firing and another two flooded then that would explain why it's not quite starting. Hopefully I'm looking at a couple of faulty coils and some dodgy injectors - that's a huge guess of course.
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