N20 and N26 engine: Smoke from Exhaust when Starting a Cold Engine

Bulletin number

B111615

Component

Engine and engine cooling: exhaust system

Summary

N20 and N26 engine: Smoke from Exhaust when Starting a Cold Engine. When starting a cold engine, blue smoke can be seen emitting from the exhaust tailpipe for approximately 10-20 seconds. No turbo charger boost faults are stored and no drivability issues can be detected. CAUSE When the vehicle is parked overnight the engine oil pressure will equalize and may leak past the turbo charger exhaust side turbine seal.

Owners of these vehicles have filed 1,569 complaints in the engine category.