Loud pop then smoke

Good afternoon,

What color was the smoke?

The turbo may have failed. Does the car have less power?

Roy

Removal

a. Remove airbox assembly with all attached sensors
b. Remove air duct between charge air cooler and intake manifold
c. Remove intake air duct between charge air cooler and turbocharger.
D. Remove oil and coolant lines connected to turbo unit
e. Remove heat shielding, if required for clearance.
F. Disconnect downpipe and catalytic assembly
g. Unbolt turbocharger from exhaust manifold, remove turbo unit.

Installation

Installation is reverse of removal.

Editor Note: Oil supply lines for turbo along with engine oil and filter should be replaced when installing a replacement turbocharger.

Prior to reinstalling turbo unit, remove any remaining gasket material and ensure that turbo mounting surface is clean. Reinstall with new gasket.
Before restarting engine be sure to prime turbo oil supply.
Before starting vehicle, the turbocharger oil drain hose should be disconnected from the oil pan and the engine should be turned over with starter until oil is running out of the oil drain hose. This will ensure that the turbo is lubricated before initial start-up.

Turbocharger system components, removing & installing

Part I

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1. 40 Nm
Coat threads with G 052 112 A3

2. Seal

3. 10 Nm
Must not be loosened

4. Pressure unit
For charge regulator valve in turbocharger
Can only be replaced in conjunction with turbocharger
Checking charge pressure regulation, refer to Testing and Inspection - Procedures

5. Circlip

6. Turbocharger
Checking charge air pressure control, refer to Testing and Inspection - Procedures
Charge air pressure control valve and charge air pressure control valve vacuum unit are components of the turbocharger and cannot be replaced individually.
Fill turbocharger with oil via connection before connecting oil supply pipe.
After installing turbocharger run engine at idling speed for approx. 1 minute and do nut rev up, to ensure oil supply for turbocharger.

7. O-ring
Always replace

8. 10 Nm
9. Intake pipe

10. Gasket
Always replace
Note installed position

11.20 Nm
12. Heat shield
13.10 Nm
14. Banjo bolt, 30 Nm
15. Oil supply pipe

16.30 Nm
Always replace
Coat threads and bolt head seating surface with G 052 112 A3

17. Exhaust manifold

18. Gasket
Always replace
Note installed position

19.20 Nm
20. Banjo bolt, 30 Nm

21.25 Nm
Always replace
Coat threads with G 052 112 A3

22. Banjo bolt, 35 Nm
23. Coolant return pipe
24.25 Nm
25. Spacer sleeve
26. Banjo bolt, 35 Nm
27.10 Nm

28. Coolant supply pipe
29. Banjo bolt, 35 Nm

30.30 Nm
use only original bolts from parts catalog

31. Support bracket
Between turbocharger and cylinder block

32.25 Nm

33. Gasket
Always replace

34. Gasket
Always replace

35.10 Nm

36. Oil return pipe
To oil pan

37.10 Nm

38.10 Nm
Do not alter setting
Must not be loosened.

If it was white, that would indicate you are burning coolant which means a possible head gasket.

I would do a compression test to see if the pressure drops indicating a leak from the head.

If it was blue, it would zero in on the turbo.

Roy

You are welcome.

Always glad to help.

Roy

Try driving it around the block a couple of times and see if it performs well.

Let me know.

Roy