Excessive amount of oil inside the intake?

Tiny
TMCINTOSH11
  • MEMBER
  • 2015 FIAT 500L
  • 1.4L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 65,500 MILES
Hello, I was hoping someone could help me out in the right direction, I did an oil change on my wife's fiat yesterday and I happened to notice a large amount of oil in the intake tube that runs into the turbo, I first noticed it on the air filter when I was replacing it. The car does also consume oil too. There are no warning lights or a check engine light on either. The only symptom I noticed is when I've driven the car it seems to lack power to a degree and it kind of jerks a little when getting up to speed, it also runs a little rough but not horribly. My first thought was a PCV valve, but I noticed there's an OAS (oil/air separator) on these models and I didn't know if that could possibly be an issue.
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Tuesday, September 6th, 2022 AT 7:30 AM

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Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,553 POSTS
So, there is oil pressure to the turbo which lubricates the main shaft of the turbo. When the bearings go bad the engine will have low power and you will get oil inside the intake. To confirm, remove the inlet or outlet pipe from the turbo and check the endplay. It should not be more than.020 of an inch. Here is how you can change the turbo out in the images below. Check out the diagrams (below). Please let us know what you find.
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Tuesday, September 6th, 2022 AT 10:34 AM

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