Ok.

I just installed a new Intake Manifold and removed the ::cough:: cat ::cough::.

Ever since the removal of the Cat... in between shifts a cloud of white smoke will poof out of my exhaust. Even at partial throttle. But even more smoke will come out at higher RPM's in or out of boost.
This is california, so this is a huge deal. Cops are always on the look out for this kind of thing.

Also, a month or two ago, I blew an oil pump. It replaced it, along with a brand new turbo. But I never even bothered to check the engine's main bearings.
There was never any smoke for the first month after replacing the oil pump.

The car was just tuned. And aside from the smoke, it is running in top condition. It made 346 to the wheels at just 12 psi.


Any ideas? Could it just be the cat? But I know plenty of people who are not running a cat, and they don't share my problem.

The smoke is definitely oil.

 

 

First thing I would say is to check your headgasket and be sure that your acutally burning oil (check the dipstick). After that, the main seal would be another good idea. Running cat-less will definately increase your emissions though.

 

my return line kind of bends down before it hits the oil pan, do you think it could be part of the problem?

i'm going to try that.

bump

 

up again.

well, it's not the return line. fixed that, and it still does it.

 

No oil in the coolant, and no coolant in the oil.
Friends and I ran a compression test this morning and each cylinder was perfect.

The smoke is, for sure, burning oil.

Can the turbo seals be blown already?
If it were my main seals, or any seal for that matter, wouldn't it continually smoke?

It doesn't smoke until the car is warmed up.

I have a very worn clutch, and a huge vacuum leak. I doubt either of these would contribute to the smoke coming out of the exhaust. But just wanted to throw that out there.

 

anyone?

 

it sounds like your turbo has had it - check the condition of your turbo.. i bet that's where the problem is..

 

Just pulled out the turbo. It's in perfect condition. I also notice a bit of oil around where the exhaust manifold meets the head, so I know it's something internal, before the turbo.

Compression was perfect.

How do I check the main bearings, can they be changed while the motor is still in the car? Or will the weight of the crank not allow this?


The smoking has gotten signifigantly worse.

If I cruise around at like 3000 RPM it will not smoke until I let off the gas or I punch it.
The power all seems there.

Any help is appreciated.
I'm so confused.

The oil breather box is being diverted into my new skunk 2 IM, can I just cap off both the IM and the oil breather box? Or do I just leave the breather open?

 

valve stem seals. Mine did it too. After many high revs the stock valve stem seals tend to get a little loose and leak.

 

some times on a turbo honda , if you run a high level of oil, the oil level can actually be above the drain.try runnning a lower level of oil.my car is this way.i have to run the oil level to where it barely touches the dipstick to keep it from smoking.i use the moroso oil pan and usually refill it with about 4.25 quarts(it holds 5)

 

I was going to say...I don't see how bad main and/or rod bearings would make the exhaust smoke.

 

my car sometimes get white smoke right before i get into boost or like when i rev the car all the way to redline, is that normal?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MRSI00 &raquo;</TD></TR><TR><TD CLASS="quote">my car sometimes get white smoke right before i get into boost or like when i rev the car all the way to redline, is that normal?</TD></TR></TABLE>

it shouldn't. but if it's occasional, it probably isn't a huge issue.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SuperTeg95 &raquo;</TD></TR><TR><TD CLASS="quote">valve stem seals. Mine did it too. After many high revs the stock valve stem seals tend to get a little loose and leak. </TD></TR></TABLE>

Hmm... is there any way of telling if i were to just look at them? That was my original intuition(aside from the turbo) but everyone said that if they went bad, it would continually smoke all the time, rather than 75% of the time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotypeR &raquo;</TD></TR><TR><TD CLASS="quote">some times on a turbo honda , if you run a high level of oil, the oil level can actually be above the drain.try runnning a lower level of oil.my car is this way.i have to run the oil level to where it barely touches the dipstick to keep it from smoking.i use the moroso oil pan and usually refill it with about 4.25 quarts(it holds 5)</TD></TR></TABLE>

I'll double check, because I know for a period of time the oil level was a little too high.

And the P72 Pans are like 3.9 qts right?


Thanks for the replies everyone.

 

Try doing a leak down test.

 

Oh yeah... also....

It seems that power in the Higher RPMs is starting to suffer, and even last night the car reached about 7000 RPM's and didn't seem to want to go further....

 

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

It seems that power in the Higher RPMs is starting to suffer, and even last night the car reached about 7000 RPM's and didn't seem to want to go further.... </TD></TR></TABLE>


blow by
loosing power with losing compression at the big end

r u getting full boost the same time as before and holding boost good and steady?

 

Check the seals between the tranmission and the engine because that where the oil leaks and burned when oil dripped to exhaust pipe which causing oil burning smell. It below your engine. I had my headgasket replaced and oil pan replaced so the last one was the bad seals between tranmission and engine. Have it repair asap. Good luck.

Doug

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowsi00 &raquo;</TD></TR><TR><TD CLASS="quote">
r u getting full boost the same time as before and holding boost good and steady?</TD></TR></TABLE>

yeah, turbo is spooling same as before, and holding fine.

I really hope it's not blowby. The compression #'s were totaly fine. I can't recall the numbers at the moment though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowsi00 &raquo;</TD></TR><TR><TD CLASS="quote">


blow by
loosing power with losing compression at the big end

r u getting full boost the same time as before and holding boost good and steady?</TD></TR></TABLE>


I'm still skeptical that it's the headgasket or bad compression... it was smoking before & after the dyno run, and I was able to pull 346.2 hp to the wheels.

The smoking never occured until I changed the Intake Manifold & Cat.

 

hmm u might be burning some coolant some where then

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowsi00 &raquo;</TD></TR><TR><TD CLASS="quote">hmm u might be burning some coolant some where then

</TD></TR></TABLE>

I don't think so actually. It's a pretty obvious burning oil smell. I lose 1/4th a qt. every day or two.
And there is usually some renmant of oil in the downpipe.

No sign or smell of coolant leaking anywhere.

 

i had the same problem but mine was a kink in my oil return line....good luck tho man, for a day i was scared as hell, probably in the same position as you