If you don't find any coolant on the ground

it could very well be blown head gasket, which is very expensive to repair.

However before you decide to dump the car, you may want to try a product called "block seal" from autozone. It can seal head gasket. Follow the instruction.

I used it on a friend's 87 Civic and it solved the problem. The downside is the radiator got clogged but it was much cheaper to replace the radiator.