Question about 1986 Toyota Pickup 4WD

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Running rough,metal and oil in back cylinder.Also blowing wight smoke.

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Sounds like the head gasket is shot and will need to be replaced. White smoke is sign of anti-freeze in the oil. The metal chunks are parts of the gasket. You can go to and register for full free online repair manual with everything you could need for your truck and head-gasket replacement procedures and diagrams

Posted on Nov 15, 2009


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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.

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