ka24de coolant boilover

[awesomenick]

okay, i'm sorry if this is a repost. please point me in the right direction if it is. but i was wondering if anyone could tell me why my coolant keeps boiling over in my 93 nissan 240sx with a ka24de engine. it has a new radiator, radiator cap, water pump, thermostat, upper and lower radiator hoses too. today when i got home from school (~20 miles) i was walking into my house and i heard bubbling under the hood. when i popped my hood to see what was going on and looked in the coolant overflow tank it was bubbling inside there, like it was boiling. i think it has been doing this for a while because i can see antifreeze on my fenderwell, and it is inside the plastic cover thing in the passenger side wheelwell. thanks for your help. -nick

[rogoman]

There may be air pockets in the coolant system. If so, here's how to purge the system:1 - drain coolant2 - open the bleeder screw3 - optionally jacking up front of car helps to purge air pockets4 - fill system until coolant starts coming out the bleeder hole5 - close bleeder screw (not too tight; screw is easy to break off)6 - continue filling until coolant is at the bottom of the filler neck7 - do not put cap on the radiator8 - start motor; as coolant starts to warm up, you may see a few air bubbles9 - squeeze the hoses by hand to free up possible air pockets10 - put cap on radiator

[awesomenick]

i did all this. turns out i should have looked around a little more. i have a blown head gasket, but thank you for your help.

[awesomenick]

i did all this. turns out i should have looked around a little more. i have a blown head gasket, but thank you for your help.