Quote:
Originally Posted by Xist
Sorry guys, somehow I missed these messages!Thanks! I quickly searched for symptoms of stuck piston rings and didn't get anywhere. Is that unrelated to blue smoke?
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Blue smoke is caused by burning oil. Saturn 1.9L engine burn oil because the piston rings built up carbon, stick in the piston grooves, and let oil into the combustion chamber. A vehicle with stuck piston rings will also usually have lower compression.
Here is a good article on how piston rings work:
What does the 2nd Piston Ring Do? Purpose and Function Explained!
Edit: This UK forum has some good content on oil burning too:
https://z22se.co.uk/threads/the-reas...olution.29284/
Blue Smoke - burning oil
Black Smoke - air / fuel ratio too rich
White smoke - burning coolant.