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Old 06-09-2014, 08:00 PM   #1
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Exclamation Leaking a lot of oil an possible bad turbo

My friend has a 2003 9-5 aero and bought it with a decent oil leak which seems to be coming from the backside of the engine somewhere. Last month it got pretty bad and started going through over a quart a week and good size puddles on the ground. Underneath was covered in oil. He brought it to a shop who thought it was the pcv kit and replaced it but didn't help. Brought it to a different shop and they found oil in the intake pipe and said the turbo is pulling oil from crankcase and shooting it into the intake. Friend said he did see some blue smoke recently from exhaust. Shop says he needs to replace the turbo.

Does this sound right? I don't understand how shooting oil into the intake would be the cause of the leak. Is there something simpler to try fixing? Or is oil in the intake a sign of bad turbo seals? Turbo has 100k on it.

Any good places to get a good used td04 if it needs one? Oreilly auto has a rebuilt for $950
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Old 06-09-2014, 08:25 PM   #2
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Any chance its the oil pressure sensor, its one of the few oil leaking points in the rear of the engine? I would also doublecheck that the check valve is going in the right direction, ie not pressuring the block and leaking oil.

Is it an auto? If so check the brake booster bolts connected to the block, there is an O ring that can leak and it leaks down the block.

Used turbos should be less, how is the shaft play? Might be possible to rebuild if it isn't shot.
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Old 06-10-2014, 06:12 AM   #3
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try this before doing anymore major guess work.

powerwash the engine (get the whole underside clean and free of oil)

turn on the car, rev the engine a bit, then put it on the lift and see where the oil is coming from. if you get no oil this way try going for a short drive around the parking lot at the shop and then put on the lift.

this should give you a very clear indicator where the oil is leaking from and stop all the guesswork.
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