I know my stock turbos on are the way out (lot of shaft play) and they spray a tiny bit of oil into the intake, but I noticed that my exhaust would smoke a lot after a hard pull but only on deceleration after the pull and only do it like once, then no more? kinda wierd...any thoughts?

 

Is it possible that after the first hard boost run the built up oil from regular driving gets pushed through the motor and continues to burn in the cat, giving you the smoke @ decel?

 

hmm, possible...good suggestion

 

oil control rings on the rotors are wearing down it sounds like to me. When my engine went out slowly it would only fogg out the area when i did a hard pull under boost and chopped throttle up in the high RPM"s

It was a very intermittent problem, but when i took the engine apart, you could see major glazing and blow-bye of the oil control rings.

That engine had been rebuilt twice before I got it. So i am willing to concede that the irons most likely were the MAIN cuase of the blow-bye. ( The irons were warped enough to cause insufficient sealing The engine had been overheated when i bought the car. 3 times overheated

Kinda my thoughts on that matter.

Also for sake of mind,.. Is your oil level at the "normal" level you usualy have?

Was it around a turn?( Oil getting into the PCV system?)

 

I vote for oil control rings also.

 

hmm, crappy, that means rebuild time huh?

so maybe its not the turbos at all ?

>>Also for sake of mind,.. Is your oil level at the "normal" level you usualy have?

normal...and normal oil consumpsion

>>Was it around a turn?( Oil getting into the PCV system?)

no, going straight.

any way to determine if its the oil control rings without taking the engine apart?

 

Mine had the same problem. Had the mechanic take the motor apart, what do you know, bad oil rings. They were twice the allowed spec.

 

Unfortunately no not really. Kinda like everything internally related on these engines. You have to take apart the sandwitch to get to the meat...so to speak!

Probably a good time to do it since it just started to appear. Hopefully the irons and rotors will be reusuable. Since you take very good care of your cars I assume they will be. How many miles are on the car? And you can probably thank the previous usage as a track car for the expedited oil seal wear But it was worth it though...right

Also if you have any questions about the turbos.. you should just rebuild them as well while they are still operating within tolerable specs. More preventative maintanence before big failures

 

had the same and it was bad turbos

 

Did you rebuild or replace your turbos? If rebuilt, did the problem go away?

Damian- If you have a question, which it sounds like you suspect them. then I would rebuild those first. As you take good care of your cars i would think you would notice other problems with oil cosumption as well. I was using quite a bit at the end .

Of course this is the cheaper way to go. And can rule out a 3k plus rebuild. And only be out the cost of a rebuild kit for the turbos

 

well, it was smoking a lot again today, even at idle, ill rule out the turbos by checking the intake pipes for excessive oil and also im gonna try to idle the car witht he turbos out of the intake path, ill pull off the IC tube and put an airfilter there, and then see if the turbos are sraying oil or if it still smokes with the turbos out of the loop.

 

bring your car buy damian i will take a look at it if you want your car is doing the same as mine did and it was the turboes

 

PCV valve. Remove your oil cap and see if that stops it. I did the 95 PCV valve removal mod after I went single (and already capped the second pcv line). I had the same problems. The pressure would build and force oil out of the turbo seals and into intercooler piping, out of BOV and anywhere else it could. I got terribly embarrassed with the james bond smoke screen... took a couple days to figure it out.

Hope that is it because it is an easy fix.

 

well, ill try your suggestions, the thing is that i took off the turbo side intercooler pipe and it was clean, REALLY clean, that scrares me....i think there is is no oil coming from the turbos. :-(

...but ill try the oil cap thing.

 

well ****, .... i took the turbos out of the intake loop and idled the car, it smoked bad...even at idle ....also opened the oil neck and didnt change a thing, smoked pretty good.

:-(

any chance the oil injectors are stuck or trippin out and dumping oil in? i thought about disconnecting the oil injector vac line to do a test, if the smoke stops then i know, but I am not sure if its a valid test....if the dam thing is stuck open or whatever then the vac dosnt matter.

thoughts on if its the oil injetors?

 

It's a possibility but they would have to be dumping alot of oil thru there. And for that to happen I would think your OMP would be freaking out as well. As that is what delivers the oil to the injectors. ( you knew that )

I think the valid way to test them would be either to remove and plug the hole in the block. Or remove the oil feed to them... As i think if they failed they would fail in the "open" position. so just unplugging vaccum supply them would still allow oil to flow thru them.

The first is better IMO because it plugs the hole instead of having a vaccum leak. Just dangle the lines into a cut milk jug to keep it clean in there

 

i talked to steve kan on the phone and he pointed out the obvious thing i forgot , the turbos can still be dumping oil, just on the exhaust side, not intake side (duh, im a dork) so I really did not rule out the turbos all together when i did my test, only the intake side, and its more likely that they would blow oil on the exhaust side...

.... i hope that is the case !!!