My brother who lives at the other end of the country has two of these. One auto one manual, but have near enough the same engine and injection etc so handy for swapping bits in an attempt to find a fault.
The auto isn't as much used - but has to be mobile to move in and out of the garage etc when needed.
On starting one day, it was missing on one cylinder. Ignored, as it managed to move.
Next time, two cylinders missing. Didn't clear up even when run to fully hot.
Now, it won't start at all.
Plugs are wet - but all appear to have a strong spark outside of the engine. Plugs and plugs leads and dizzy cap etc swapped with the other engine no difference.
Cam belt was changed fairly recently and it ran fine for many miles afterwards.
I've suggested he checks the ignition timing is correct as I can't really think of a fault that would cause massive over fuelling when cold - and progressively like this seems to be.
Any guesses gratefully received. ;-)