i started my car yesterday and let it idle cause it was sittin for like a week and like 5 mins water was coming out and blowin white smoke. i know i need a new 02 sensor but i dont think a 02 sensor will cause water to come out exhaust...

any suggestions on the problem?

 

Well H20 is a biproduct of the combustion process, but white smoke is not. Check and see if there is any water/antifreeze in your oil, and hope you dont have a blow headgasket.

 

^^agreed check the oil to see if theres any water in it

 

i'd have to guess blown head gasket. an engine just doesn't have water in the exhaust, and then blowing white smoke with no cause.

 

Mine does the same **** after letting it sit for months, still doing it too after driving it for a day.

 

Has it done it since? My guess is condensation in the exhaust. Was it blowing the smoke before you let it sit?

 

I'm pretty sure it's just condesation... lots of it.
It doesn't smoke right off the bat, takes a couple of minutes for it to start smoking.

 

yea the head gasket was just changed not to long ago..

it takes a while for it to start but when it does the CEL comes ona nd i did a Diagnosic test and got code 1 thats 02 sensor right?

 

oh also my car doen over heat it stays below half way mark so i dun think it head gasket

 

condensation 2x why not start it tomorrow and see what happens.

 

I have this same problem but no water in oil or oil in water just white smoke an water out exhaust after it gets to temp it’s a fully built b16a2 in my civic an the only thing I can come up with is it’s the head gasket leaking a little from the water pot in to one of the cylinders