well when my car is fully warmed up i got on it the other day and my friend was drivin behind me and said every time i go WOT that a whitish color comes out the exhaust...what is the reason for this and is there any thing to worry about..thanx

 

i'm thinkin'...some how or the other...you're burning coolant.

 

well i did notice i lifted my hood and on the top of my radiator there was some radiator fluid on top of it...ill post some pix soon as i can if this will help any

 

open your radiator and check for oil in your coolant or look at your oil and see if it's milky. is it thick white smoke? take a whiff of your exhaust at WOT, check if it smells a li'l sweet.

 

so what exactly is the problem and how can i fix it

 

or u could be running lean.

 

bump

 

ttt

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by luvinmyGSR &raquo;</TD></TR><TR><TD CLASS="quote">ttt</TD></TR></TABLE>

why are you bumping ??

You have not said anything useful other than there is white smoke and there's coolant at the top of the radiator.

Did you look for oil and coolant mixed ? Did you smell the white smoke ?

Does the coolant level go down after driving it for awhile? How is the engine temp ?

Only reason you need to figure this out, is, because if that is infact white smoke, and it smells sweet, then it is burning coolant. And that can be a headgasket which is serius business.

So far all you are doing is playing guessing games.

 

I had white "smoke" coming from the exhaust at WOT, but my car was running extremely rich. I thought it was some sort of condensation at first, but then realized it was unburnt fuel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trige &raquo;</TD></TR><TR><TD CLASS="quote">I had white "smoke" coming from the exhaust at WOT, but my car was running extremely rich. I thought it was some sort of condensation at first, but then realized it was unburnt fuel.</TD></TR></TABLE>


Really ? Apparently no one ever told you that black smoke out of the exhaust is a sign of running too rich, not white.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ScreaminTeg &raquo;</TD></TR><TR><TD CLASS="quote">


Really ? Apparently no one ever told you that black smoke out of the exhaust is a sign of running too rich, not white.</TD></TR></TABLE>

 

I know the difference between the colorings of smoke. I do realize that a partial-combustion of gasoline would produce a yield of Carbon (the black smoke) wich would be produced without an adequate oxygen supply, but I wasn't talking about partially-burnt fuel. I had gasoline passing through the engine that wasn't being oxidized whatsoever because in my case, the car was at the point of bogging due to soo much fuel being injected at WOT.

I just mentioned it to add some light to the situation, seeing that the original poster may have already discounted the fact that it was condensation (or coolant) but was still sure that they were seeing white smoke. Fuel has a high boiling point (up to 200C) and at atmospheric pressure won't tend to spontaneously combust as it would in a high-pressurized cylinder. But even in a high pressure cyclinder, if the optimal conditions aren't met (such at fuel/air ratio off the chart), the fuel will not burn. So hence the excess fuel vaporizes and looks like white smoke upon exiting the exhaust.

The Back smoke you are referring to happens in most situations in which the fuel DOES BURN, but with a very limited O2 supply. So rather than CO2 or CO, you are left with C (carbon).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trige &raquo;</TD></TR><TR><TD CLASS="quote">I know the difference between the colorings of smoke. I do realize that a partial-combustion of gasoline would produce a yield of Carbon (the black smoke) wich would be produced without an adequate oxygen supply, but I wasn't talking about partially-burnt fuel. I had gasoline passing through the engine that wasn't being oxidized whatsoever because in my case, the car was at the point of bogging due to soo much fuel being injected at WOT.

I just mentioned it to add some light to the situation, seeing that the original poster may have already discounted the fact that it was condensation (or coolant) but was still sure that they were seeing white smoke. Fuel has a high boiling point (up to 200C) and at atmospheric pressure won't tend to spontaneously combust as it would in a high-pressurized cylinder. But even in a high pressure cyclinder, if the optimal conditions aren't met (such at fuel/air ratio off the chart), the fuel will not burn. So hence the excess fuel vaporizes and looks like white smoke upon exiting the exhaust.

The Back smoke you are referring to happens in most situations in which the fuel DOES BURN, but with a very limited O2 supply. So rather than CO2 or CO, you are left with C (carbon).</TD></TR></TABLE>

Not that I am calling you a liar or wrong here, you cannot come to such quick conclusions though. Since you want to get technical, I'll throw some technical data back.

The "boiling" point you are referring to, is called vaoprization. And you cannot just say that fuel vaporizes at 400 degrees F. Because that statement would be untrue.

Seeing as how various pertolium companies have different compound and blends in their own fuel, that also vary between each time of year, Chevron fuel might vaporize 100 degrees before Exxon does. As I'm sure you know, when a liquid boils, it's vapor pressure has exceeded atmospheric pressure. So when you pressurize these different fuels, their boilding points are going to change once again. Fuel can vaporize at over 600 degrees F.

Now, you also said that you once had fuel passing through your engine once that was not being burned, and coming out of the exhaust as WOT. And what color smoke was coming out of your exhaust ? Also, how was your car setup so that this was occuring?

I have a similar experience with this myself. My Integra was setup N.A, and almost bone stock. I decided to put RC440cc saturated injectors in, with nothing to conrol them. So they were injecting 440cc of fuel and 43psi running at 48-50% duty cycle. And you know what came out of my exhaust ? BLACK SMOKE. The car bogged heavily and was pretty much rendered undrivable.

If you care to read some more about fuel vaporization, allow me to show you to a link. Certain things might have changed since this data is a little old.

Check out this page.

Need Adobe to view.

 

same thing happen to my car got a oil change all better no coolant **** was coming out though maybe im running to rich i dunno

 

hey ... trige !!!!! .... how did u solve that problem....
my car has white smoke comng out too ....and it always smells like gasoline .... i think i may be running too rich too .... how would i solve that ?!?!?!
thanx

 

thanx ill take a look at the coolant

 

if yoru headgasket was bad you would overheat almost immediatly. to check if your headgasket is bad look in the overflow bucket, if there is oil droplets in there than your headgasket is bad. btw if it was a headgasket your car would constantly smoke, not just at WOT. WOT smoking is usually A)oil being combusted at high rpms (blue smoke). B)unburnt gas (white smoke) motor running inefficiently (normal). also your car can be running rich, too much gas, not all of it being combusted. but WOT smoke is due to the high rpms. changing yoru spark plugs can rid some of that a lil more.. getting the fuel tuned will fix it. its not a critical thing.

 

if you think its a fuel problem check the o2 sensor. it tells the computer to add more or less fuel.