The radiator on my 2001 Volvo v40 blew on the highway last week and the engine overheated.
I had it towed to my shop, and let them know the situation, and expressed concern of engine damage because it was running rough.
I was told it was just the radiator and it would be fine. After a week of back and forth with the shop and $3100 for almost an entirely new cooling system, they tell me that a valve in the engine is burnt and the engine needs to be replaced.
They're claiming they couldn't have diagnosed the burnt valve before the radiator repair. Is this true? I really don't want to be on the hook for $3100 and stuck with a car I can't use.
Edit: I guess the real question is, could you perform a compression test on the engine while the cooling system was disconnected/broken?