What causes this problem?

 

probably a blown head gasket

 

def. a blown head gasket, or retards "addin oil" the last time you took it pep boys!
(J/K)

 

blown headgasket. check the oil to see if it looks milk shakey.

 

blown headgasket... fun to replace been through a couple myself

 

if you have a sohc just pop that head off and slap on a new headgasket not too hard.

 

if u take off your radiator cap and press the gas while the car is running and it shoots up like a volcano or even a little bit u have a blown headgasket

which is what everyone else has pointed out so ill stop playing capatain obvious..

 

does it also mean that my gasket blown too?
cuz i just had honda check for the radiator coolant, it was not much left in da bottle rite beside the radiator. there was oily on da bottom of the bumper then honda fill some coolant again. but yesterday, i check again, it's only have some left. but it was full when i had it check wit honda wit full of coolant.
can anyone help me??

 

the coolant is suppose to shoot up...that's how pressure is built...IF there's OIL in the coolant then that's a headgasket problem...i suggest getting new headgasket and getting your radiator flushed....let's see....i got a y8 (y7 same) headgasket for ~$35.00 at honda and i got my radiator flushed for about ~$45.00..so about $80.00...8)

 

might be your waterpump..check to see if you are leaking coolant..if so i'm pretty sure that's your problem..and if you're gonna get that done might as well do timing belt too...if your belt is getting worn out...good luck! 8)