I have a 98 prelude and when Im in vtec, a mysterious color smoke has been coming out. Its like a very light tan color almost. Its not burning oil. I mentioned to someone and they said it might be fuel? Does anyone know what Im talking about? If so... how do you correct this?

 

From your exhaust or your engine?

 

Its coming out of the exhaust

 

mine does it too. Do a search it happens to alot of vtec motors.

 

Do you know what it is?

 

My friend said that you need to replace your VTECH

 

replace my vtec what?

 

Uhhh Yeah of course your burning fuel or otherwise your car wouldn't go anywhere and second you are burning oil if your in vtec. But when you burn excess oil you should have a bluish tint color and burning lots of fuel or running rich should be a white color. What kind of upgrades do you have?

 

none. its stock.

 

nop,when ur running alot of fuel the color that comes off the exhaust is black kinda brown too, when it comes like white or gray its oil.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DOHC_VTECH &raquo;</TD></TR><TR><TD CLASS="quote">My friend said that you need to replace your VTECH</TD></TR></TABLE>

yeah, i replaced my vtech. i was starting to get bad reception

http://vtech.com/

 

LOL. Anyways, when u hit VTEC, there's going to be some burnt oil and a lot of carbon (at least that's what I think it is) coming out of your exhaust. Everytime I hit VTEC and look in my rear view mirror, there's a lot of smoke as well. So unless there's another reason to think something is wrong, it sounds normal to me.

 

If you have no cat it will smoke in vtec.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DOHC_VTECH &raquo;</TD></TR><TR><TD CLASS="quote">My friend said that you need to replace your VTECH</TD></TR></TABLE>

Tell you friend he needs to replace his bong water..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DOHC_VTECH &raquo;</TD></TR><TR><TD CLASS="quote">My friend said that you need to replace your VTECH</TD></TR></TABLE>

Thats the stupidest thing I've ever heard.

If your smoke is really brown something is f'd up. Hard throttle high RPM black smoke is just the engine running rich - normal, greyish black with light throttle/low load is normal for high miles cars - oil, truly white smoke is rare but bad (coolant leak).

 

it might be water?
lol
jks
but who knows..
taste it.. no dont..

its prob coolant..
check your coolant reservoir if its substantially low then thats prob your problem..
if fuel.. check your fuel consumption and compare it with others on here.. ask around what people get for "x" miles/galon...
trial and error
as for the v-tech thing never heard of that one...

 

time for a good old compression test.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by codeh22a4 &raquo;</TD></TR><TR><TD CLASS="quote">nop,when ur running alot of fuel the color that comes off the exhaust is black kinda brown too, when it comes like white or gray its oil.</TD></TR></TABLE>
I think you are mistaken man white smoke indicates the burning of coolant. black= fuel, bluish=oil. And yes it is normal to burn oil in vtec.

 

It may be unburnt fuel. H22's get real rich right after vtec. It seems that it's pretty normal for H22's to smoke in vtec. It wouldn't hurt to check your leak down and compression, that way you can rule out rings or cylinder wear and just be comfortable with it being a normal thing.