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-   -   New engine have rattle/grinding noise (http://www.chinariders.net/showthread.php?t=22292)

goat67 10-05-2018 08:09 AM

Quote:

Originally Posted by AresROC (Post 291890)
Thanks the gas tank cover is one of the first things I checked for vibration noise. The brace seems to be fine and tight, but I havn't checked the horn yet.

Tight is not the issue make sure it is not coming in contact with the motor I had mine positioned so that it would at times make contact.

Desuboi941 06-15-2023 09:41 AM

Quote:

Originally Posted by AresROC (Post 291515)
Took the bike out for some top speed flat out runs.


Seemingly after the bike ran over some dirt/rocks, bike is making a rattling/grinding noise. Video: https://youtu.be/aQmU0q0np4Y


I parked the bike and checked for loose bolts. All were tight except the exhaust header can be tightened a bit more.


Rev the engine in neutral and the noise seems to be coming from the engine. Sounded as if a rock was inside, but it was not making the noise all the time, and from time to time the noise sounded really bad as if something is grinding.



I also noticed the valve noise is getting louder with its ticks.


Anyone have any idea what is causing the noise from an engine with 30 miles on it??? :hmm:


This is when the noise started: https://youtu.be/DAdwMbX7NXc

LMK

Hey man, my hawk is making he same noise, only on wot in high revs or at max speed. When I go 50, it starts buzzing or grinding whatever, with the more I push it, the more and harder it buzzes. If I go up to 60, the bike will do fine, as I give it more the speedometer starts going down but I feel as if I'm going the same speed. I dide use synthetic to run it twice but I didn't ride on it. I've been using t4 or t6 10-40 or 15-40 ever since. It runs smooth down low. There's a slight inconsistency in the idle, but it sounds good. I was thinking it might be my speedo cable. Bit idk I'm hoping it's not too engine. Have you found out what it was?

tknj99 06-15-2023 09:47 AM

Check to make sure its not a loose heat shield on the exhaust


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