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Top end rattle

351 Views 2 Replies 2 Participants Last post by  skinnyb
2008 YFZ450, completely stock.

Does this sound like normal engine sound or do my valves need to be adjusted?


This bike was neglected in storage for a few years but I had it tuned up a couple months ago at a shop, (carb clean & rejetting, oil change, etc). It was running great afterwards but I'm a little paranoid now that I've ridden it hard a few times that an issue may be showing? I might just be paranoid, idk. I'm a complete noob at small engine stuff. Would love to be told I'm just being dumb 馃槃

If a clip of me revving it harder would be helpful, let me know and I'll record another tomorrow.
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I think it sounds good my 05 would sound like that and these yfz's have a loud motor.
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I think it sounds good my 05 would sound like that and these yfz's have a loud motor.
That's what I've read as well so thank you for verifying.

Been trying to find videos of stock YFZs to compare to but everything on youtube has an aftermarket exhaust lol.
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