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2000 Honda 400ex smoking

Austin20

By Austin20
in Honda ATV Forum

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PissAnt Apprentice

PissAnt

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Posted

Have you over filled the oil? Is it smoking only when first started, during engine rev or all the time? Blueish color smoke is created by excessive oil going into the cylinder.

Ajmboy Grand Master

Ajmboy

Posted
Posted

Try changing the oil and make use you use correct 4 stroke atv oil with all the additives. As oil breaks down, it can get past the rings into the cylinders. If it's excessive, maybe do a compression test.

* Added manufacturer to thread title.

DirtDemon Veteran

DirtDemon

Posted
Posted

Worn piston/rings, worn cylinder bore, or leaky/worn valves, seals, or guides can all allow oil to leak into the cylinder. Most likely you just need rebuild that motor. The more you can afford to replace, the better.

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