91 240sx coolant boiling out of the overflow tank ... HELP!!! PLS!!!

[espa.s13]

ok what i did was flush the coolant and bleed it. then i had air in the engine. so what my friend told me to do is take out the thermostat. so i did that and the engine runs great no problem at all. then i bought a oem thermostat and put it on. now the problem starts. when i go home last night from a friends house about 60-70 miles away. when i parked my car i heard that boiling sound. it was the coolant boiling over the overflow tank. i have new raidiator cap. new thermostat. coolant was good. can anybody help me .. dont know what to do .. PLS HELP!!!

[mrzabala]

Boiling usually occures if you dont have the right mixture in coolant. Using a 50/50 coolant mix will give you an easier time in having the right mixture. Also, Check for leaks, and was your thermostat installed correctly? You can bleed your coolant while the car is running. As pressure builds, the air will rise and coolant will sink. Just add coolant as coolant goes down until you reach the top of your radiator. This should be a 30-45 minutes to insure you bled the system of air. Ive done it to 2 cars and there both doing great as I havent gotten phone calls about any problems in this area.