[Not a good day!] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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Not a good day!
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Posted by: Phillburt57

So yesterday I went to some local dunes with a group of friends and all was going well and then disaster. My EX was running great and then in 4th I goosed it a little and no juice so I stopped and then started her back up and I hear a horrible knocking. I got towed back to camp and decided to look at my oil filter and there were metal flakes everywhere. I don't know exactly what I did but I think I threw a rod bearing. Help me out guys my mods are in my sig and they really aren't the kind of mods that would blow a motor up.

Posted by: trx400EXtreme

was your timing off?

Posted by: Phillburt57

I don't know but the motor was bone stock internally thats what is weird about it.

Posted by: trx400EXtreme

how long have you had your hotcam in?

Posted by: Phillburt57

That's the thing though is that the Hotcam never got in. I was waiting to get the 416 in before I put it in. It's still a bone stock motor. I have all the parts waiting out there but never got the time. That's why I find it hard to believe my 400ex blew up.

Posted by: DementeD

very weird but..how well do u maintain this bike? was ur oil low? and i guess ull be starting that 416 earlier then u thought

Posted by: Hatchman

That's odd, but sounds like you might have spun a bearing. Don't hear that much on Honda's but I've had a Suzuki and Yamaha do that.

Good luck and wish you a speedy rebuild!

Posted by: Phillburt57

quote:
Originally posted by DementeD
very weird but..how well do u maintain this bike? was ur oil low? and i guess ull be starting that 416 earlier then u thought

Maintained meticulously. Full tank of oil everything checked out perfect just a fluke I guess. Less than 15 hours on it is the worst part of all.

Posted by: RoadRage77

Did you check your jetting? Besides It now just gives you a good reason to rebuild