i couldnt find anything with the search on this guys so sorry i had to post. i have a bone stock 00 s4 and it is always lets out a white vapor from the exhaust i know some cars do it when the car is cold or cold outside but it usually goes away mine never goes away. i live in good ol' cali and we dont even get much cold days here but the vapor is still there. does anyone have this problem? or is it something normal with the car?? thnks for any help i get

 

have you checked your oil recently to see if it is getting milky? this could be a head gasket disintigrating.

 

I just changed my oil 1k miles ago and the old oil was fine and the new oil is not milky eighter. So I guess the head gasket are fine thnk god cus don't got much money to get that fixed right now lol. Some of my honda friends tell me it looks pretty normal and that it don't look like anything bad but it does it always so I wanted to check if anyone had that problem

 

I mean around town it is pretty common, but if you get it out on the freeway for a good open drive for an hour or so it must go away right? White vapor is an indication of water, usually cars have a little water that can steam off for however long, but not forever. Your coolant level is not depleting right? Have you tried switching gasoline stations? Some gas stations just have more water in the gasoline.

 

Really appreciate the help. And no my coolant is not depleating so it must be eighter the gas or just be normal because it is true when I take a pretty long drive on tha freeway it does go away but as soon as I drive it on tha street for a while it comes back so hopefully its normal again thnks a lot for the help ima be able to sleep at night now lol

 

sounds pretty normal if the oil/water are ok the catalyst creates water hence the white smoke, it could just be the humidity where you are just keep an eye on things

 

Find out if you have any codes in the ECU. You might be running to rich and over taxing the cats. Or you can have a small coolant leak.

Look and see if there is any "rainbow" in the coolant, basically it will look like oil in water, or dark stuff.

You say it's vapor? Or is is smoke? White smoke is oil burning. You might have a turbo going and leaking oil in the system. Remove the TBB and see if there is oil in there.

 

blue smoke = oil burning, white smoke = water which the catalyst would produce,

 

[sm=exactly.gif]

 

Yup, your car is definitely done for. Looks like you'll have to sell it. Yup.... tis a shame.