I went to a car show Sunday. to say the organisation was bad is an understatement. I ended up stuck in a queue for about an hour with cars piling up all around to reduce back down into 1 lane again.
Whilst in this queue, I had a bit of smoke coming from the exhaust (oil control rings gone, yes, need to get those sorted, yes I know it's an engine out job), I did also end up turning it off and restarting a few times because of this smoke. I've had no issues restarting before until one time it just refused, it was as though it had flooded. I did the usual quick de-flood procedure (accelerator to the floor etc) and it just wouldn't catch, it kept turning over as though it wanted to but never quite got there.
I ended up letting it settle for a while and tried again after say about half an hour, I'm pretty sure it was only firing on one rotor, wouldn't hold idle, barely any power when i did manage to get it moving. Also a very strong smell of fuel so it was throwing fuel through/out somewhere.
RAC guy came out and tested the coilpacks, good spark on all 4 HT leads.
This leaves me with a few possible issues;
Apex seals gone kaput in a sudden and major way (unlikely, not enough buildup to sudden catastrophe).
Coilpacks are gone and RAC guys tester was naff.
Spark plugs fouled (wouldn't this also show up on the test?).
Temp sensor fault (no buzzer sounded and my buzzer works annoyingly so).
Anything else you can think of?