2g running lean smoke when warm??

[rixcidia]

hey guys so im having an issue i had put in a replacement motor in my 2g 4g63 turbo and when i start the car it runs nice and smoth but after a few minutes when the car warms up on idle i get some stong smell and smoke out of the exhaust if i rev the engine at idle more comes out but when i drive the car everythings fine even under boost its fine just when im at idle or at a stop sign for awhile any ideas what this means?

 

[drtj]

Sounds like you are having the same problem i am. I have a 99rs. I know we have different motors but they all basically work the same. I talked with a mechanic the other day. He said it sounds like the valve guides &/or seals. I was leaning towards rings. How many miles is on the motor? Mine has 160xxx. Gonna do a valve job first to see if that will fix it.

 

[lilbp12369]

Alot depends on the color of the smoke. Here is a quick run down:

Symptom: Gray or blue smoke from the exhaust. You notice gray smoke coming from the exhaust when you start your car. The smoke may or may not disappear after the car is warmed. If it is, it is less noticeable. The smoke may have a bluish tint to it.
Possible causes:
The engine's piston rings may be worn.
The Fix: Replace piston rings. (Generally not a DIY job)
The engine's valve seals may be worn.
The Fix: Replace valve seals. (Generally not a DIY job)
Damaged or worn valve guides.
The Fix: Replace valve guides. (Not a DIY job)

Symptom: Engine uses more oil than normal, and there is some smoke from the exhaust. The oil level is low between oil changes. It appears that the oil is being burned by the engine because of the smoke in the exhaust. You may or may not notice the engine doesn't have the same power as it used to.

Possible causes:
The PCV system is not working properly.
The Fix: Replace PCV valve.
The engine may have mechanical problems.
The Fix: Check compression to determine engine condition.
The engine's piston rings may be worn.
The Fix: Replace piston rings. (Generally not a DIY job)
The engine's valve seals may be worn.
The Fix: Replace valve seals. (Generally not a DIY job)


Symptom: White smoke or water vapor from the exhaust. You notice white smoke coming from the exhaust when you start your car. If it is cold out, this may be normal. If the smoke does not disappear after the car is warmed, you have a problem.
Possible causes:

Cylinder head gasket(s) may be bad.
The Fix: Replace cylinder head gasket(s).
Cylinder head(s) may be warped or cracked.
The Fix: Resurface or replace cylinder heads. (Resurfacing is not a DIY job)
The engine block may be cracked.
The Fix: Replace engine block.


Symptom: Black smoke from the exhaust. You notice black smoke coming from the exhaust when you start your car. The smoke may or may not disappear after the car is warmed. If it is, it is less noticeable. Engine may or may not be running rough or misfiring.
Possible causes:

Fuel injectors may be leaking.
The Fix: Replace fuel injectors.
You may have a dirty air filter: Replace the air filter.
There may be some other type of ignition problem.
The Fix: Check distributor cap and rotor. Ignition module may be bad.

 

[rixcidia]

My engine is one I bought from tiger Japanese sapossed to have 500 - 5000 on it the mechanic says it was in amazing condition but he thinks because these engines sit around for years it could be the valve seals or rings I only see smoke when car is been idling for awhile does not happen right away and also does not happen when I'm driving only when it's at a stop for awhile

 

[SlickPyro]

Do a compression test to tell if it's rings but from what you said it seems like valve stem seals.

 

[1983gsp]

Oil seal on the hot side of the Turbo. My 91 tsi had the same symptoms. Remove the Turbo and take the hotside off and look around the plate behind the turbine. Guarantee you that's where its at. If the valve seals were the culprit, it would smoke on initial cold start then smoke again at hot idle. Dropping the Turbo is simple and takes way less time than disassembling the head.

The reason for the seal leaking was oil coking from not letting the Turbo cool down. The coking was so bad the bottom drain was plugged up on the hotside not allowing the oil to drain back into the pan. It took a pick and carburetor dip and a lot of cussing to chip all that crap out. While its apart it would be a good idea to go ahead and rebuild it.

 

[inthemidst]

Check your turbo for play.Its probably starting to go out.

Take off the closest boost pipe to the turbo and if theres oil in there.The compressor seal on the turbo is blown.That problem happened to me exactly as you described it.

 

[rixcidia]

Eee I'm scared to find out if it's my turbo I bought a evo 3 16g from eBay 4 years ago I paid 650 for it,

What pipe do you mean by closest boost pipe I wanna look at it but dont wanna pull the whole turbo off ?

 

[1983gsp]

You can rebuild a 16g for less than $150. Pull the intake pipe off the Turbo and grab the nut on the inside and wiggle it up and down then side to side. A little up down is acceptable. Side to side is not. But still, remove the Turbo, pop the hotside off and check behind the plate. If there's any oil residue, the seal is bad.

Oil can also accumulate in the charge piping by route of the pcv system. That's why a lot of people use catch cans.

 

[rixcidia]

Ok thanks I'll check it out in the morning hope it's an easy fix for me if I have a turbo issue who fixes them?

***UPDATE***
so i removed the intake off the turbo and i found a small amount of oil in the intake pipe and inside edge of the turbo i have not removed the turbo completly off yet but this is so far what i can see and if i grab on to the nut and there is a little bit of play from up and down if i move it and i can also move it from side to side if i really try but hard to reach it. but please let me know your inputs on this and here are some pics of the intake pipe and my turbo with the oil right as i pulled them apart.

***UPDATED With Pics***

 

[1983gsp]

That little bit of oil in the intake tract is normal. It would probably do you good to drop the intercooler and clean it out with some gas while you're doing the maintenance. Compressor wheel looks great. Go ahead and drop the Turbo and pull the hotside off and check the oil seal there.

 

[lilbp12369]

I agree with some previous posters if you are only really experiencing smoke if the car sits and idles it does found like a build up of oil blow by from the turbo. Have you pulled off any of the intercooler piping to see if there if any oil in there? having worked on diesels for about ten years for the army as a soldier and as a civilian now we notice a lot of blow by from those vehicles as for the most part they sit an idle quite a bit. I wouldn't rule out the valve seals quite yet but from what you are describing a turbo seal sounds like the culprit. And don't be scared of having to have it rebuilt I know a few people on this site that will rebuild it for about 150 ish or can even have it upgraded to a 20 g for a little more but still under 300. So don't be to afraid bud. Keep us informed.

Edit: you know I just noticed something I completely missed from looking at your pictures the first time. I don't think you have a real evo 3 turbo... From the second picture that data plate you can see is not something real evo 3 turbos have. So I really would say its the seals at the point. Somebody correct me if I'm wrong but I don't think I am.

 

[1983gsp]

On second inspection, that looks like an evoIIIgt eBay Turbo. Pull that piece of crap off your car, sell it to a Honda boy, recoup some money and get a genuine 16g.

Lol, you beat me to it...

 

[lilbp12369]

Haha just barely but yeah I would get rid of it. for sure. If cash is short just get a good used 14b for the time and upgrade when the cash flow is better

 

[rixcidia]

Hey thanks alot guys for all your comments, are you sure thats not a real evo 3 Where could I get a proper turbo from?

 

[lilbp12369]

Yeah pretty sure it is not a real evo 3 turbo. EXTREME PSI : Your #1 Source for In Stock Performance Parts is a good price for a new 16g. But personally I would buy a used or rebuilt one since the price of these turbos has went up so much over the past year.

 

[rixcidia]

Wow I was told when I bought this turbo 4 years ago that it was 100% original evo 3 16g I'm so disappointed now to find this out in BC I'm told it costs 500 to rebuild these turbos :-(

 

[lilbp12369]

I wouldn't waste my time rebuilding a ebay evo 16g. There is one for sale right now on this forum: MHI evo III 16g *LOOK* PRICE REDUCED! - DSM Classifieds

Keep your eyes open for one. they are for sale all the time on here. Also there are a few guys on this site that will rebuild turbos for a great price. JusMX141 quoted me this for when I asked about rebuilding my 16g: "Evo III rebuilds are $150-$170 depending on thrust options, plus return shipping.

~Jus"

so don't know where you heard 500 but that is way overpriced for a rebuild.

 

[rixcidia]

Hey Guys!! Actully I was just going through my box or odds and ends and I found a turbo that was on my newer engine when i bought it last year but it caused my car to smoke more i believe so the tech took that off and put the ebay turbo on but what kind of turbo is this???

the numbers of the turbo read as 49178-01450 not sure if this is a good or better turbo then the ebay evo3 16g is the 49178-01450 worth repairing or should i buy a different one?

This one I guess is the 49178-01450 = evo 1 16g

 

[lilbp12369]

That is a much better turbo than the ebay turbo. Pm JusMX141 and ask him about rebuilding it and price. Get it rebuild and you will be good to go.

 

[rixcidia]

Ok Thanks I just sent JusMX141 a message about rebuilding my turbo hopefully he can do that for me being that I'm in Canada.

 

[vl4bad]

HI,

I have a 95 Talon TSi AWD, the car is almost complete and almost track ready,
I just bought it and the guy that owned it didn't tell me much about it, but from what i have experienced so far is a good car that pulls real hard, and sounds beautiful...now to the point,
Since I don't have it insured yet i don't drive it, but I do start er' up everyday to let her idle,
the engine was rebuilt and has new everything and upgraded stuff toot will idle after a cold start kind of high around 2,000rpm and then will settle to 1200 but then it starts to go from 750-1200 and the AFR gauge will show up bouncing around and then staying around 12.3-12.7 around that range. then when i rev in quick short bursts the car will throw out some white smoke and then smell kind of sweet. my Gas gauge doesn't work and my oil gauge doesn't work either. can someone tell me what my problem is i have aem EMS but i don't have a pc neither am i experienced in tuning. please help me i just want my car to be alright. thanks

-edit: also when i put my headlights on bright the idle messes up also, things i think of that are messing it up are: needs a new battery, head gasket needs to be replaced, antifreeze leak? , car needs the idle to be tuned, TPS is messed up, or maybe i need to give the car an oil change and a full tank of gas. idk.

-dave