Ihave a '97 850 glt 2.4 turbo.I just put a new turbo on now whenI am driving and let off the gas and get back on the throttleI get a puff of blue smoke.It dosen't smoke at idle or at speed just when you let off the gas and back on again.Can anyone help?

 

Somehow oil is still burning in the combustion chamber. It is probably from the turbocharger or from the cylinder(s). See what Moderator Tech has to say on this. Any external oil leak?


JPN

 

HOw many miles on the car? What is the condition of the engine? Could be anything from assembly oil from the new turbo burning off to bad riungs, bad valve guides, etc...

Glenn

 

Vent system clogged?
Was the old turbo burning oil?

 

the volvo has 200,000 mil on it but it runs great no power loss no noise i did notis a small amount of oil on the back of the block just under yhe turbo but the turbo seems dry

 

the old turbo was locked up i dont know if the old one was burning oil. what vent system can be blocked i am new to turbos so any help would be great

 

i did see last night under the turbo on the block was leeking not the turbo but i cant see whear it is coming from

 

The old turbocharger locked up due to:

- Oil starvation due to low oil or neglected oil change.
- Lack of cool-down idle after a prolonged freeway run in a hot climate.
- Lack of coolant supply (unusual, unless the coolant level is low).

Oil leak at the bottom of the oil return line is a known problem and it should not cause smoke from the tail pipe. Have the seal ring replaced. If the leak is from the oil supply to the turbocharger, have the problem corrected. Pics would be a great help.

I recommend using synthetic oil for turbocharged engines.


JPN