Saturday, November 03, 2007

Blue smoke on startup


I see blue smoke in my exhaust when I start my engine. Is this normal or should I worry about it?
Yes, and No! Your engine is burning oil. That, in turn means your engine has worn valve guides, piston rings etc. An engine that burns a lot of oil (more than a quart in 800 miles) is an engine that needs to be overhauled. Normal oil consumption should be a quart or less in 1500 miles. If this is the case then the bit of blue smoke you see is considered normal and there is no need to worry. Most newer engines consume less than half a quart of oil between oil changes (every 3000 miles). In general if your engine is burning oil, it’s essentially worn out and needs to be repaired.