White smoke from exhaust manifold

Rommy · 06-08-2006, 02:14 AM

When I give my Supra good warming up and drive it around, smoke starts to come out from inside the exhaust manifold cover; I don't know what it could be, but I doubt it's oil, it's not blue smoke. It's white, and smells a bit, but not super strong. I know my high-pressure power steering hose is leaking, could it be that? I don't know if it runs near the exhaust manifold though.

Also, I'm getting little to no power at like, 3500+ RPM. It goes all the way to redline then shifts no problem, but it's like there's no power. Is this normal on a N/A automatic?

Any ideas, guys?

Note, my engine does NOT overheat.

sd88supra · 06-08-2006, 03:27 AM

sounds like a blown headgasket. have you done a compression test?

Rommy · 06-08-2006, 03:59 AM

Quote:

Originally Posted by sd88supra

sounds like a blown headgasket. have you done a compression test?

No, I have not. However, if it were a blown headgasket, I think it would be a lot worse. Plus I'd be leaking something. And I'd be overheating.

Only thing I'm leaking is power steering fluid, but that's another story.

Rommy · 06-08-2006, 04:03 AM

A friend told me it could be the exhaust manifold gasket. Is that a possibility? It's coming from like, right there.

theWeezL · 06-08-2006, 02:06 PM

While the smoke could be from the powersteering fluid burning off on the exhaust, it wont effect your preformance.

Perhaps you have two different problems. Are you losing oil or water? is your oil milky? are you getting white smoke out the end of your exhaust? If you answer any of these questions yes...you have a BHG. however if you answered no to all of them, then you have a more preplexing proplem.

You say you see smoke out from under the exhaust manifold shield? Have you tried taking this off to get a better look? The lack of power may be a completely unrelated issue, but start with your outward signs and work it from there.

Rommy · 06-09-2006, 03:03 AM

Quote:

Originally Posted by theWeezL

While the smoke could be from the powersteering fluid burning off on the exhaust, it wont effect your preformance.

Perhaps you have two different problems. Are you losing oil or water? is your oil milky? are you getting white smoke out the end of your exhaust? If you answer any of these questions yes...you have a BHG. however if you answered no to all of them, then you have a more preplexing proplem.

You say you see smoke out from under the exhaust manifold shield? Have you tried taking this off to get a better look? The lack of power may be a completely unrelated issue, but start with your outward signs and work it from there.

I'm not losing oil or water. Absolutely no leaks whatsoever except the power steering fluid.

I took the exhaust manifold shield off today, and there was white smoke coming from right under the manifold. On the right side was the most obvious, when the car was hot, it would be steaming right out of there. I DID see some white smoke coming out of the exhaust, but that was when we first started the car early in the morning. Might've just been the weather/cold car.

I don't see how the power steering fluid could be dripping somewhere where it could burn, though.

Oh, I just remembered. If I had a BHG, would I still pass smog? Because I'm in California, and I passed smog the other day with no problems whatsoever, my emissions were actually lower than average.

theWeezL · 06-09-2006, 05:03 AM

Well the smoke has to be some kind of fluid vaporizing, so PS seems like the most likely culprit. dunno how it could be getting there, but what else could it be?

suprra_girl · 06-09-2006, 09:33 PM

could be the distributor seal leaking oil onto the manifold?
does it look like it's coming from below the manifold and up or what?

Rommy · 06-11-2006, 04:43 PM

Quote:

Originally Posted by suprra_girl

could be the distributor seal leaking oil onto the manifold?
does it look like it's coming from below the manifold and up or what?

Looks like it's coming from below the manifold, yes. Very much doubt it has anything to do with the distributor. In between the manifold piping, the smoke comes out. Mainly on the side towards the front of the car.

theWeezL · 06-11-2006, 05:15 PM

just thought of another diagnostic question to ask...what does the vapor smell like? Coolant has a sort of sweet smell to it, oil burning is acrid and obviously petrolium based, and powersteering fluid or ATF is kind of a sharp sweet petrolium smell.

what does yours smell like?

06-08-2006, 02:14 AM	#1
Rommy Stock Join Date: May 2006 Location: California Posts: 21	White smoke from exhaust manifold When I give my Supra good warming up and drive it around, smoke starts to come out from inside the exhaust manifold cover; I don't know what it could be, but I doubt it's oil, it's not blue smoke. It's white, and smells a bit, but not super strong. I know my high-pressure power steering hose is leaking, could it be that? I don't know if it runs near the exhaust manifold though. Also, I'm getting little to no power at like, 3500+ RPM. It goes all the way to redline then shifts no problem, but it's like there's no power. Is this normal on a N/A automatic? Any ideas, guys? Note, my engine does NOT overheat. __________________ 1990 N/A Automatic Supra. Red. No mods. Engine needs repair first. Anyone want to sell me dash trim piece? Mine is falling apart. Last edited by Rommy; 06-08-2006 at 02:21 AM.

06-08-2006, 04:03 AM	#4
Rommy Stock Join Date: May 2006 Location: California Posts: 21	A friend told me it could be the exhaust manifold gasket. Is that a possibility? It's coming from like, right there. __________________ 1990 N/A Automatic Supra. Red. No mods. Engine needs repair first. Anyone want to sell me dash trim piece? Mine is falling apart.

06-08-2006, 02:06 PM	#5
theWeezL 12psi boost Join Date: May 2006 Location: Oregon Posts: 376	While the smoke could be from the powersteering fluid burning off on the exhaust, it wont effect your preformance. Perhaps you have two different problems. Are you losing oil or water? is your oil milky? are you getting white smoke out the end of your exhaust? If you answer any of these questions yes...you have a BHG. however if you answered no to all of them, then you have a more preplexing proplem. You say you see smoke out from under the exhaust manifold shield? Have you tried taking this off to get a better look? The lack of power may be a completely unrelated issue, but start with your outward signs and work it from there. __________________ *____________* *Eagles may soar, but weezl's never get sucked into jet engines!*

06-09-2006, 05:03 AM	#7
theWeezL 12psi boost Join Date: May 2006 Location: Oregon Posts: 376	Well the smoke has to be some kind of fluid vaporizing, so PS seems like the most likely culprit. dunno how it could be getting there, but what else could it be? __________________ *____________* *Eagles may soar, but weezl's never get sucked into jet engines!*

06-09-2006, 09:33 PM	#8
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	could be the distributor seal leaking oil onto the manifold? does it look like it's coming from below the manifold and up or what? __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

06-08-2006, 03:27 AM	#2
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	sounds like a blown headgasket. have you done a compression test?

06-11-2006, 05:15 PM	#10
theWeezL 12psi boost Join Date: May 2006 Location: Oregon Posts: 376	just thought of another diagnostic question to ask...what does the vapor smell like? Coolant has a sort of sweet smell to it, oil burning is acrid and obviously petrolium based, and powersteering fluid or ATF is kind of a sharp sweet petrolium smell. what does yours smell like? __________________ *____________* *Eagles may soar, but weezl's never get sucked into jet engines!*

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