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Oil burning

Tiny
JAMES MICHAEL WHATELEY
  • MEMBER
  • 2008 VAUXHALL CORSA
  • 1.6L
  • 4 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 84,000 MILES
Hello, I've have the vehicle listed above VXR model. It recently had a new turbo and service. If I hold the revs say at 3,000 RPM's then accelerate I get a puff of blue smoke, but If I don't hold the revs it doesn't smoke no loss of power. And I have had a compression test done and all has come back good.
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Monday, June 24th, 2019 AT 9:01 AM

7 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This could be a couple of things. If your engine is a overhead camshaft design then this could be the valve seals leaking oil into the combustion chamber and it getting burnt that way. Another way that oil could be getting introduced into your vehicle's combustion chambers is through the output shaft seal on your vehicle's turbo. If failing, this will allow oil from the gearbox into the volute where it will be compressed and enter the combustion chambers along with the compressed intake air. Please let us know what you are able to find out.

Thanks,
Alex
2CarPros
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Monday, June 24th, 2019 AT 9:15 AM
Tiny
JAMES MICHAEL WHATELEY
  • MEMBER
  • 4 POSTS
Hello, it's had a new turbo last week. So I am going to give a guess valve seals. If try to replace them.
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Monday, June 24th, 2019 AT 9:23 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It sounds like the new turbo is bad did it smoke before the last turbo went bad?

Here is how a turbo works:

https://www.2carpros.com/articles/how-turbo-chargers-work

Please run down this guide and report back.
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Wednesday, June 26th, 2019 AT 11:57 AM
Tiny
JAMES MICHAEL WHATELEY
  • MEMBER
  • 4 POSTS
It did smoke before the new turbo was fitted. I've had the spark plugs out and they are covered in black carbon and not wet. I've also had the down pipe off again and see no oil in the exsausht the only oil I can see is in the intake pipe that connects to the throttle body.
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Wednesday, June 26th, 2019 AT 12:42 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Can you remove the exhaust side of the turbo to check the end play? Also see if there is oil present if there is the turbo is bad or you have a plugged oil return line from the turbo to the engine pan. Do you have any codes?

Here is a guide to help, IDK if you have an ALDL can you tell me?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
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Thursday, June 27th, 2019 AT 10:38 AM
Tiny
JAMES MICHAEL WHATELEY
  • MEMBER
  • 4 POSTS
Hello, I don't have any engine codes present and when I checked for play in the turbo I couldn't feel any play in the turbo. But when I took the intake pipe off I do see oil where a breather hose connects on to.
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Thursday, June 27th, 2019 AT 12:50 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Do you know if that cleaned replaced the oil return from the turbo to the engine? Do you see oil on the turbo veins?
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Saturday, June 29th, 2019 AT 4:10 PM

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