Overheating can be caused by engine problems?

[v6dreamer]

Can overheating be caused by problems within the engine or the cylinders? I went to a local mechanic and he tested the car for overheating and said I should go to the casa because the problem is with the cylinders. I was of the opinion that causes of overheating are always external to the engine....

Should I get a second opinion? I cant afford casa rates right now

btw my car is a 2000 accord

Overheating caused by too many, like clogged or leaking radiator or hose, defective head gasket, radiator cap, faulty cooling fan, faulty heater core, stuck thermostat, bad water pump, belt tension, retarded or over advanced ignition timing and many more. Kaya were not only settling radiator or hose. Possible na ma-damage sa overheat....cracked engine block, burn valve, warp head block and so on.