Quote:
Originally Posted by ngoma
You are correct that blue smoke usually indicates burning oil. Somehow oil must be entering the combustion chamber. I can only think of piston rings, valve guides, or possibly holed piston? I suppose a damaged turbocharger could divert oil into the intake.
Very interesting your description of what happened.
Driving normally except for voluminous black smoke, then a single loud "clunk," then no more black smoke, but voluminous blue smoke?
No change in engine tone otherwise?
Same performance before/after the "clunk?"
Smooth idle?
What is the oil level?
I'd be hesitant to run the engine before a good inspection.
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Hard to get a bearing on engine performance, but little to no difference. Before the noise there was a louder clattering noise? Like a card in bike spokes.
Then the engine was noticeably quieter with much less black smoke but tons of blue. It is weird.
What is a valve guide? Excuse my ignorance.