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Oil in intake tubes

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Old 11-13-03, 12:46 PM
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Oil in intake tubes

Hey guys, I notice I find a little bit of oil in my intake tubes and also my stock BOV seems to shoot out quite a bit of oil also...
I even put a small filter on the end of it but that doesnt really seem to hold it in... Isnt that a sign that my turbos are going out on me, I would think they would have by now, my stock twins have just over 100k miles and I have been running 14psi for the last year... Anyone know whats up with that, I know a lil oil is normal and everything & this doesnt seem to abnormal im just curious...
Old 11-13-03, 01:23 PM
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If you have +100k on the original turbos, then the bearings and seals on the spindles are probably giving up. This would allow oil to seap into the boost side of the turbos and throw it around in the intake. You may be looking at a turbo rebuild soon.
Old 11-13-03, 01:54 PM
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Some oil is normal, but large amounts could mean that your turbo's will be going very soon.
Old 11-13-03, 02:12 PM
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Had the same issue.
First, oil in the intake, then oil
out the charge relief valve, then oil
smoke out the exhaust at idle.
always had good boost though.
I almost replaced the engine, but
instead replaced the twins with a low
mileage set and the smoke and oily
intake are history.
Wait until the smoky idle gets
embarrasing

Jack
Old 11-13-03, 02:14 PM
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Don't forget to clean out the intercooler from time to time
Old 11-13-03, 02:32 PM
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Thats your crank case vent. Its a line that goes from the oil filler neck to the primary intake pipe so vent crank case gases back into the intake.

Its not uncommon for some oil to get in the line, especially when making a super hard turn. This is why a lot of road racers run a catch can on it

STEPHEN
Old 11-13-03, 04:18 PM
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Originally posted by jagjack

Wait until the smoky idle gets
embarrasing
Sound advice. Although oil ingestion is a detonation risk, realistically you won't have a problem. There would be hundreds of guys on here that have run leaking turbos for years (I have, twice) without any drama. Just keep checking the oil level.

It's so bad on my car that it creeps past the intake manifold gasket. But since it only smokes for about 1 minute at startup, they keep going.

-pete
Old 11-13-03, 05:29 PM
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Yea it had me worried before becuz Ive only got about 6k miles on a pettit streetported engine and I noticed occasionally I would get an oil related smoke from my exhaust while idling for periods of time, it would puff out some smoke for a minute then stop if say I was sitting at a long red light, Everyone said my oils seals were going and I hoped not but then when I saw the oil all the way up in the throttle body I figured that must be causing my smokey exhaust... (knocks on wood)
Old 11-13-03, 05:32 PM
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yep, just replaced my twins with a freshly rebuilt set, woohoo that feels nice!!
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