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Crf100 top end knock

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My crf100 top end has a knock and its low on power. I looked at and adjusted the valves and cam chain but it still knocks. If i move the flywheel with my hand back and forth i can hear the knock. I can not figure it out. Someone please help!

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I took the top end off and if i grab the conecting rod i can move it up and down alittle so it has play. Should it have alittle play in it? 

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No, thats bad. Zero play up and down. Sounds like you need a rod bearing bro. bummer

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Yeah thats gonna suck. :banghead:  would i have to get a whole conecting rod kit?

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It's probably easier just to get a new crank.  Shop around on the internet and use different years.  I just checked, I think they discontinued the earlier cranks which used to cost about $145. I did find some cheap ones one ebay.  Just get 1992 and up.

Edited by socalxr

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