I've had a bunch of problems with my truck (2000 Ford Ranger) and I've been hoping to sell it. Most recently, I was driving it and the heater control valve snapped. I drove it home and replaced the heater control valve and the first time I took it out, the heat wasn't working and it eventually started to overheat. I pulled it over and had it towed to the mechanic, then said I wanted it fixed so I could drive it again, but also that I'd like to have him look it over to see what kind of stuff I would need to fix before selling it (so that I didn't end up pawning off some death machine on someone).
The next day, the mechanic told me that the compression in all the cylinders is way low, and that it would be very expensive to fix because the engine would need to be replaced or rebuilt. They said that the overheating problem is also being caused by the bad compression because the coolant isn't being routed the right way.
Normally I would not be surprised if it were a problem like bad compression, since the truck has consistently had a number of issues, and is always incredibly slow to start until it gets warmed up, but the one thing that is giving me pause is that the guy who runs the mechanic shop and one of his mechanics are both eager to buy the truck. I think the price they've offered is fair considering the expense of the repairs, but I'm a bit worried that they have an incentive to tell me the problem is worse than it is.
Personally, I'd love to be rid of the thing and not have to deal with this anymore (given the problems it has given me), so I'm happy to accept their offer if the compression is the problem. Can anyone tell me if these sound like problems that could be caused by bad compression?