I'm selling my E34 at the moment, it has too many things coming up due for repair/replacement, and I need the money. Plus, I've owned it for 3 years, and feel the need to try another car. I've found an E32 that's a bit rough around the edges, but going for a good price. It has few primer patches, a rattle in the front, and needs a general tidy up, but most significantly, has low compression in 1 cylinder. The owner bought it with the intention of doing it up, but never got around to it. It's a 735iL, and has the self-leveling LAD system replaced with conventional suspension.

The car is driveable, but runs rough under 2000rpm. What can cause low compression in a cylinder? Is this easily fixable? Owner states it may have a cracked valve, but is not sure.

This is of course all dependant on the sale of my car.