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Once engine has started smoke coming out - Cars & Trucks

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Smoke coming from exhaust is sign of a few things wrong. Either the petrol -air mix is not correct and rich fuel mix is going in. Worse oil seal leak. This means engine oil from sump is finding its way into engine cylinders and igniting with petrol. A sign that engine could be damaged soon. This needs to be addressed quickly - piston rings may be loose also.

Without knowing vehicle make or model it is hard to suggest anything further.

Posted on Mar 16, 2015

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Posted on Jan 02, 2017

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