Question about Mitsubishi Eclipse
Blue Smoke: Blue smoke
is caused by engine oil entering the cylinder area and being burned
along with the fuel air mixture. As with the white smoke, just a small
drop of oil leaking into the cylinder can produce blue smoke out the
tailpipe. Blue smoke is more likely in older or higher mileage vehicles
than newer cars with fewer miles.
How did the engine oil get inside the cylinder in the first place? The car has many seals, gaskets, and O-rings that are designed to keep the engine oil from entering the cylinder, and one of them has failed. If too much oil leaks into the cylinder and fouls the spark plug, it will cause a misfire (engine miss) in that cylinder, and the spark plug will have to be replaced or cleaned of the oil. Using thicker weight engine oil or an oil additive designed to reduce oil leaks might help reduce the amount of oil leaking into the cylinder. I that doesn't work then i would get with a mechanic and have it leak tested for possible piston ring replacement.
Posted on Mar 07, 2009
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