[Rosieuk]

My car has the 1341MPFI 12v Alpha engine - not a bad little unit (apart from the unmodifiable ECU). However it does have two potential nasties. It has a 50,000 mile cambelt and it has hydraulic lifters.
With the latter, do not deviate from manufacturers specs for oil and more importantly make very sure a garage doing a service doesn't. You will get all sorts of weird problems and more importantly you will knacker your lifters & valves without the right oil viscosity. Luckily I got away with it with the Accent, but it's still not perfect (replaced most of ignition system, idle air bypass, TPS before the problem was identified). In addition the garage mashed number 4 injector cable replacing the idle controller..
If it runs long enough like this you will need new valves, lifters at best, a new head (valve seats) at worst. Not to mention all the metal shrapnel politely introducing itself to your bearings etc.