> My question is, at this point, the car is still driveable, just
> idles rough and is down on power, but I can still get around town
> ok. What happens when you drive a car with low compression in 1
> cylinder? Will the engine eventually stop running or lock up
> without warning?
Depends a great deal on where the compression is going, IMO. If it's going
into the water jacket, you're going to have a hard time keeping the cooling
system full and low coolant is a killer for aluminum engines. But I've
driven iron engines for a long time on N-1 cylinders (first car was a Chevy
straight 6 that only ran on 5); and the only real problem was vibration and
lack of power.
> Should I disconnect the spark plug lead from the bad cylinder and
> drive it like that, or leave it attached?
I'd disconnect it.