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Old 04-07-2004, 03:32 PM   #1
Santo Domingo 2.5 RS
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Default Oil Hell

Ive been having this oil leak problem ever since I started my turbo project, and I cant stand it anymore, Ive tried everything. im running a T3/4 turbo. I already redid my oil return line like 3 times. Did the oil restrictor mode (1/16 hole). Rebuilded the turbine like 3 times already. I dont have any more options right now, and the thing is still leaking oil. I dont see how can this be possible, I even swaped the center of the turbine and it still started smoking again. I would go around on the car and not smoke, but if I stop in a couple of seconds a dark cloud of smoke would start coming out of my tailpipe. I already checked for piston rings and these are all fine. For example, Every morning I let my car fully warm up to operating temperature, and it wouldnt smoke, but after I go out, and its sees some oil pressure for a while, it starts smoking whenever i stop on traffic. The place I take the turbo to rebuild it, says that the problem its the return line, but Ive checked this a thousand time and everything is right, the hose is 3/4 wide, so its pretty big, comes out of the turbo and goes next to the headers without bending or anyting, all the way to the crank. Im tired of this and really dont know what to do next, what do you guys think?? The only thing Im thinking of right now, its that there might be positive pressure on the crank or something that wouldnt let the oil go down on it. Im running my cranckase breathers to a catch can with one of those little filters.

Anything You might think of would be realy aprecciate it, since Im so tire about it, Im planning to take apart the whole turbo kit.
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Old 04-07-2004, 03:45 PM   #2
HOK
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Is your PCV capped?

Are you valve cover lines going to teh Catch can as well?

Lets start with some pics of the turbo oil outlet and piping of oil catch can.


Also is it BLACK smoke? or gray smoke out of the tail pipe...

I have black smoke coming out of the tail pipe all the time
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Old 04-07-2004, 04:17 PM   #3
scoobyimprza
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This sounds familiar. Sounds like my last engine. Get a compression test done, a piston may be cracked.

Brent
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Old 04-07-2004, 04:34 PM   #4
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I assumed he checked the rings but that method...
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Old 04-08-2004, 10:58 AM   #5
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yeah dude. I had the same problem. Does it smoke under boost too? Mine ran fine except it started to smoke undr boost. Eventually it ran like complete crap. I took it in and had a leak down/ compression test, and they said #4 was leaking 70% I tore my motor apart and looked at all of my pistons.. everything looked fine, the rings everything. So I was going to put it all back together, but before I did that I put everyting in a pressure washer (super high temp) When I let the parts cool.. sure enough the #4 piston litterally fell apart. anyway sorry about the story. I was just giving you a heads up on what "could" happen. It sounds llike you have oil blow by through the PCV from a blown ring.
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Old 04-08-2004, 11:09 AM   #6
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that sucks ;/
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Old 04-08-2004, 03:13 PM   #7
Graham
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www.krankvent.com

This fixed me right up...I was having the same problem as you described, except that I didn't do the restrictor mod, i did this first. I don't really know why it works, but it does.

There is a older thread about this you may want to look up also. its called "PCV" or something like that. Either way, I really think Metric kit from krankvent will fix your problem.


Graham
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Old 04-08-2004, 05:36 PM   #8
Santo Domingo 2.5 RS
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Today I was checking everything, and found oil on my intercooler, and coming out of the compressor side of the turbine, also some oil on my BOV. My PCV is teht with the valve cover breathers into the catch can, and there is no oil inside of it, so this is why I dont think it might be a piston ring. How could I tell if it is the compressor side of the turbine or a piston ring?

The car runs prefectly except for this, it idles perfect and smooth and I cant hear any funy noises from the engine at all.

Pi7467mp- It doesnt smoke under boost, it only starts smoking when you let the car idle or slow down, but only after running for a while. If I turn on the car for example, and dont move it at all, and just let it idle it doesnt smoke at all. So I think its oil pressure related.

The car smokes a lot more if i boost it for a while and then let it sit. It would start smoking really bad after it.
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Old 04-08-2004, 05:40 PM   #9
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if it is a piston ring you will have blow by through the PCV.. When a ring is blown it will increase put pressure into the valve train blowing out oil. If you say that your car runs fine, and your catch can is clean then it is your turbo.. especially if there is oil in your intercooler and your BOV.
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Old 04-08-2004, 05:49 PM   #10
Santo Domingo 2.5 RS
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The thing that i dont get is, why does it start smoking after i let the car idle and it smokes a lot more after I boost for a while, or sustain high speeds for a while (like highway driving)?? The catch can is just oil stained, if you take it off, I wouldnt throw any oil, just the oil in its walls.
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Old 04-08-2004, 06:02 PM   #11
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Quote:
Originally posted by Santo Domingo 2.5 RS
The thing that i dont get is, why does it start smoking after i let the car idle and it smokes a lot more after I boost for a while, or sustain high speeds for a while (like highway driving)?? The catch can is just oil stained, if you take it off, I wouldnt throw any oil, just the oil in its walls.
probably because boosting and fwy cruising are associated with high oil pressures, so the oil could be forcing its way out of the turbo only in those situations.
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Old 04-08-2004, 06:06 PM   #12
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I would take your turbo back in and have whoever you had rebuild it test to see that it is in deed. Not leaking.Turbos obviously spin at high rpm's and you can't always tell exactly what is going on just by looking at the. I would take it back and tell them to do it right.. just my 2 cents
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Old 04-08-2004, 06:07 PM   #13
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I can't type today sorry.
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Old 04-08-2004, 06:12 PM   #14
Santo Domingo 2.5 RS
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usually when your rings are gone bad, wouldnt the car smoke the whole time even from startup?
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Old 04-08-2004, 06:14 PM   #15
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not necessarily. They might hold normal cylinder pressure, but when they are worn out you will see blow by under boost.. maybe under normal driving conditions under NO boost everything would seem ok.. Once you hit boost. instant blow by.. personal experience.
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Old 04-08-2004, 06:23 PM   #16
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Are there any other symphtoms besides the smoke when the rings or a piston goes bad?
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Old 04-08-2004, 06:32 PM   #17
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really bad hesitation, CEL, misfires. fouled plugs.
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Old 04-08-2004, 11:43 PM   #18
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if it starts smoking after you leave it to idle for a little while, or after a hard run.

My bet is that your Valve Seals are worn out, and you are getting oil seeping down the valves and into the combustion chamber.
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Old 04-09-2004, 12:02 AM   #19
Pi7467mp
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good call.. Have you tried an "oil conditioner" like engine restore. If you try this and the problem gets better, than the valves could be the issue, and for only 4.99 it might be worth it.
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Old 04-09-2004, 06:40 PM   #20
Santo Domingo 2.5 RS
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Yep, already tried the oil conditioner. Could you have oil in your intercooler and BOV do to bad valve seals?
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Old 04-09-2004, 06:58 PM   #21
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Quote:
Originally posted by Santo Domingo 2.5 RS
Yep, already tried the oil conditioner. Could you have oil in your intercooler and BOV do to bad valve seals?
There is no way for oil to get to your turbo/intercooler from your valve seals... If ther is no oil in the PCV/valve cover breathers (or only very little), no oil on the inlet side of the turbo, but oil on the outlet (in the intercooler and BOV), then your turbo is likely the problem...

-Charlie
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Old 04-10-2004, 01:55 PM   #22
Pi7467mp
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phattyduck is rioght. The ONLY way that your valve seal could be the problem, is if you have oil in your PVC system... I still say your turbo is the prob.
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Old 04-10-2004, 02:13 PM   #23
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When you boost it seals up the leak in the turbo.

I had a t3 on a old 1.5l Civic SI(yea it was wild)

Did the same exact thing I would be cruising making mad boost no oil problems at all. I get to a light and WATCH OUT I would fog up the intersection EVERY TIME.

Whoever rebuilt your turbo is messing it up, or when you put the turbo back on your not priming it with oil.

Are you priming it with oil?
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Old 04-12-2004, 11:53 AM   #24
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when you say priming with oil, do you just mean to pour some oil in the oil inlet beafore starting the car?
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Old 04-12-2004, 03:28 PM   #25
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i'm totally confused about the priming oil as well...


but what Jgore mentioned sounds like a good start...

Is there a way for you to put it back to NA real quick?
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