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Old 11-17-2006, 04:19 PM   #1
udelslayer
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Default Urgent help with diag requested: smoking stock turbo

Config: 2003, mostly stock, Cobb Stage I flashing, gutted uppipe.

Driving in traffic today, I saw smoke from the scoop. I freaked out, and pulled over, popped the hood and found that there was some smoking coming from the outside. NONE from the exhaust.....

I found a couple pine needles (My car gets covered with this crap where I park) jammed between the heat sheild and the turbo housing. I pulled that out but didnt look at it too closely....I didnt see oil residue anywhere around the turbo (but the sheild is on). I checked the oil, normal level as its always been.....

I drove my 15 miles to work at 70mph. No loss in boost, no strange sounds, nothing weird. I gunned it a couple of times in 4th on the highway to see if anything strange happened. .....it drives perfectly normal. Normal boost, normal spool sound....no smoke from the rear.

I got to work, pulled into my spot (by now its really heated up) and no smoke, no nothing.....

Do any of you have any experience with road debris causing smoke from the turbo? Am I being paranoid?

thanks
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Old 11-17-2006, 04:21 PM   #2
distorto
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it wouldn't be smoke from the turbo, it would be smoke from the burning debris.
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Old 11-17-2006, 04:37 PM   #3
udelslayer
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Hmm.... so normally you dont see smoke on the OUTSIDE of the turbo if something is wrong with it? I mean, when you blow an oil seal or anything that usually results in tailpipe smoke right?

I'm thinking that it was the pine needles since that stuff is pretty flamable....what else should I be looking for?
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Old 11-17-2006, 04:42 PM   #4
udelslayer
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I see what you're trying to say, but if some debris is stuck in there (and I'm not jamming my hand inside the heat sheild on hot turbo to check its pulse...) it could cause smoke theoretically?

j
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Old 11-17-2006, 11:20 PM   #5
udelslayer
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I searched..... QUESTION:

Should the area around the oil inlet be completely dry? I see absolutely NO residue on it except for the usual rust on the turbo. No leaks around or under the car, no busted CV boot, no real clue. I figured if the oil send or drain was leaking it would be very noticable.

I know the exhaust is HOT but does it get hot enough to ignite some pine needles? probably....

j
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Old 11-18-2006, 12:29 AM   #6
nich0lai
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Yes. You could have ignited some pine needles no problem.

Yes, it could be something else too.
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Old 11-18-2006, 09:52 AM   #7
ZoomnWRX
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some oil might have seeped out and burnt up. i had that happen to me for a year or so. everytime i changed my oil, a bit would seep up and burn up (smoke through scoop) then would go away next time it was driven. if it's not consistent i wouldn't worry about it. my car now has 83k miles on it and the turbo is still 100%
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Old 11-18-2006, 11:52 AM   #8
firebox40dash5
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Yes, you could burn that debris. My EGT sensor is in the bung on my DP until I get headers taken care of, and I regularly see ~1k degrees. That's plenty to cause pine needles to smoke.
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Old 11-19-2006, 02:02 AM   #9
udelslayer
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Well, thanks for the confirmations. I think it was a fluke and I was freaking out. I have never seen smoke bellow out from under my scoop before (though steam could make it on a rainy day)....

I've been driving it around and nothing has happened lately. I couldnt track down what it was that caused it, but I am giving an educated guess that it was the pine needles. Discussing this with a guy led him to a story where some dude wanted to collect the insurance money from his car so he piled up leaves and parked it running on top of them in contact with the cat......car=toast.

Those hard oil lines that lead into the turbo see some heat. They get pretty corroded. I'd really like to replace my in line but I guess I dont need to since it aint broke I shouldnt mess with it. Is that a dealer part (i'm guessing it is)....

If turbo seals were busted, I'd see it out the rear anyway.
I think I can close this case and move on. At least I know what to look for after doing a bunch of searching.

...
thanks
j
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