Thank you for your help. I got the car back home. I added more coolant, change the radiator cap, ran it for 45 minutes, shutted it off for the night. In the morning, I check the upper hose, it seems firm (I assumed pressure holds). I ran for 2 hours no troubles. The car rans fine but the temp gauge is not working. It stays at C and or at 1/4 and dropped back to C. The heat is working for the front but not the rear. In the evenning, I checked the upper hose again. It seems soft ( I assumed it has lost it pressure). No leaks, Oil is clean, no smoke. I will do the pressure test next time when I save enough money.