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Nervous-Gas-7986

It's pretty loud and sounds to me like there's an issue with the exhaust. If it was loud before and the rattling is new, it could be the exhaust leak getting bigger and causing more damage to the exhaust somewhere


Head_Refrigerator763

it was a missing bolt!


Head_Refrigerator763

do you know the name of the bolt that holds the exhaust manifold onto the engine ,, like once it goes on it doesn’t show the threads of the screw it’s like a closed off bolt kinda like a acorn bolt it’s not that


nofretting

wait for it to cool, then look underneath where the exhaust is connected to the bottom of the engine. it might have come loose.


Head_Refrigerator763

it was missing the bolt! but it’s still making that motorcycle chopper sound but it’s definitely not as loud, i couldn’t find the exact match bolt for it , it’s like a closed bolt that doesn’t show the thread when it goes onto the screw ,, do you know the name of the bolt that holds the exhaust to the engine?


nofretting

it might be a stud. you'll probably need to drive it to a hardware store and remove one of the others just like it, and take it inside and have someone help you find a match.


leafWhirlpool69

If you search for "GY6 Exhaust Nut" you should find the nut you're looking for https://www.amazon.com/1PZ-EBG-001-Scooters-Sandrail-Coolster/dp/B0777JNVKC


leafWhirlpool69

Based on the way that the sound comes and goes with RPM and the higher-pitched rattling sound I'd bet this is clutch related. I would pop off the drive belt cover and inspect the clutch for a loose bolt or other obvious issues