i replaced the water pump,besides it being a little dirty it still spinned ans firm too.i replaced the water pump and belt,and some new plugs.test drove it to find the top radiator hose pressurized again.

what would be causing this?i open the radiator cap and air/coolant comes out,and i mae sure there wasnt any air before i drove it.

my only idea is the hea is warped or cracked,possibly cylinder pressure is working its way into the coolant passages? or head gasket still holding compression but gone between the passages as well.are these car known for this or ever heard this problem?

 

I would guess on the head gasket. Ive had them go between the exhaust port and water jacket. This will pressurize the radiator but you wont get water in your oil. Crack open your cap and let the car run up to temp if it starts pumping water out of the top of the radiator then its time for a head job.

 

yes as a matter of fact when it warms up it does pump water out until i shut the car off.damn where am i gonna get a head,assuming its not the head gasket.thanks.

 

It might not be the head itself. It might just be the gasket. I know where there is a head in a j/y but im in Oregon. Just pull it and have it checked you might be alright. Where are you located?

 

let me ask this is it overheating? and if not hoses do pressurize they are supose to and the hoses get old and like to stretch out over time and blow up so if no overheating it is probably nothing

 

sorry for the late reply manofsteel, the car i guess didnt over heat but when that hose got pressurized and i pulled over to see whats goin on, the hole on the water pump bursted with coolant out the top,i replaced the pump and it was kinda corroded but no broken fins and no play.i dont wanna mess this new pump up.im also hearing a blocked head or block or head gasket.when i find out ill let you guys know for sure.

 

well whaddya know,a small hairline crack in the combustion chamber,heading too a small coolant hole.i guess i found my problem,anyone have a good spare head they wanna get rid of?