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2000 trx300ex smoked at start up question

p5200

By p5200
in Honda ATV Forum

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p5200 Community Regular

p5200

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This trx300ex was smoking at start up but, then quit after a couple minutes. I was starting every day. I went almost a week without starting and then today I started it and it never smoked a bit. Anyone know what's up here? Has plenty of oil. 

Mech Grand Master

Mech

Posted
Posted

A bit of sand down the spark plug hole will get the smoke back.. 

I'd guess that the regular use has been improving the ring operation day by day and you hadn't noticed..  till today. 

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Mech Grand Master

Mech

Posted
Posted

Valve seals..  Possibly.. But I've never seen it. Rings though get sticky in their grooves, sometimes from sitting , or from bad oil and other things.. A change of oil and regular use nearly always make things improve.

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