Electronic ignitions are great and rarely give trouble but, man, the fuel injection on old cars (particularly old Euro cars) is about as reliable as mud. Sure, the cars run cleaner and (in theory) get better mileage - when everything is working properly!

I used to have a '67 Amazon that I converted to a Weber carb. I bought the car in 1983 with 80,000 original miles, and by 1995 I had turned over 500,000. Drove the crap out of it. About every 75,000-100,000 miles it would start running weird (lean/rich, crappy idle) and I would just pull the carb and rebuild it in my garage. Rebuild kits were cheap and I could do it in a couple of hours.

Now I've got an oxygen sensor, an air mass meter, a fuel pressure regulator, a coolant temperature sensor, a hall effect sensor, an ECU and the wiring to hold it all together. A couple thousand dollars worth of parts - on a good day. All of which can cause any manner of driveability problems, the symptoms of which mimic each other in many cases.

(Rant mode off...)